Water-cooledlaser beamdump

Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

*Does not include shipping fees, import fees or local representation. Request quote for full details and local sales contact.

Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.

Laser beamAnalysis

Because Science DC The STEM-oriented shop in Adams Morgan is hosting an “eclipse party” on Monday, starting at 12 PM, where you can make your own pinhole viewers. For the less DIY-inclined astronomer, the store also offers eclipse glasses.   Strosniders Hardware The Bethesda location had a few eclipse glasses left on the shelves when Washingtonian called on Monday morning—but hurry, as they only have a limited amount.   College Park Aviation Museum The historic airport and museum once hosted the Wright Brothers. On Monday, starting at 1:30 pm, it’ll be hosting an eclipse “viewing party,” where glasses will be distributed for free while supplies last.   David M. Brown Planetarium Arlington County’s best venue for stargazing, run by its public school system, will be offering free eclipse glasses this Saturday and Sunday, before screenings of a special eclipse-themed show. Check their website for showtimes. This event has passed.    DC Public Libraries They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.    Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

Laser beam positionsensor

David M. Brown Planetarium Arlington County’s best venue for stargazing, run by its public school system, will be offering free eclipse glasses this Saturday and Sunday, before screenings of a special eclipse-themed show. Check their website for showtimes. This event has passed.    DC Public Libraries They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.    Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

The QUAD-4TRACK is a laser position sensing system designed to support our unique pyroelectric quadrant detectors, QUAD-P and QUAD-E. It is a 4-channel microprocessor-based system that measures the voltage output of each QUAD element and does the math necessary to provide a measurement of the X and Y displacement of a laser beam or image. It is fast and can be used to track, align and/or measure movement in real time, with a resolution of just a few microns!

They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.

CO2laser beamprofiler

This post has been updated to include new locations.    Because Science DC The STEM-oriented shop in Adams Morgan is hosting an “eclipse party” on Monday, starting at 12 PM, where you can make your own pinhole viewers. For the less DIY-inclined astronomer, the store also offers eclipse glasses.   Strosniders Hardware The Bethesda location had a few eclipse glasses left on the shelves when Washingtonian called on Monday morning—but hurry, as they only have a limited amount.   College Park Aviation Museum The historic airport and museum once hosted the Wright Brothers. On Monday, starting at 1:30 pm, it’ll be hosting an eclipse “viewing party,” where glasses will be distributed for free while supplies last.   David M. Brown Planetarium Arlington County’s best venue for stargazing, run by its public school system, will be offering free eclipse glasses this Saturday and Sunday, before screenings of a special eclipse-themed show. Check their website for showtimes. This event has passed.    DC Public Libraries They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.    Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

Portable laser power meter for up to 250 W with flexible calibration options so the customers only pay for what they use. Includes 3 measurement modes : SSP, CWP and SSE.

Sadly, DC isn’t in the path of totality for Monday’s projected total solar eclipse throughout the United States. But according to NASA, we’ll still get to see a Sun about 87.4% covered up by the Moon—which, of course, you’ll need special glasses to see, lest you burn your corneas. Here are some locations where you can get the proper eyewear.

Positionsensing detector

Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.

QUAD-4TRACK includes powerful, stand alone, LabView software which is used to control the instrument, process the data, and display X and Y position. It also displays the energy or power of your source and repetition rate. The large graphic in this screen shows the position of the centroid of the beam and tracks its movement in real time. The software includes many handy features like: set boundary, zoom (2X to 128X), set resolution, data logging, and many more. The green line represents the tracking history.

Laser beamdump

In the measurement screen shown on the left, we are tracking the beam stability of a pulsed Nd:YLF laser at 10 Hz. The resolution was set at 0.001 nm, the boundary is at 20 µm (red circle), and the zoom feature is at 64X. The total energy is 108.5 µJ, the final position of the laser is at -8 µm in X and -8 µm in Y. The green tracking line shows the movement of the laser about the zero position over a few hundred pulses.

The STEM-oriented shop in Adams Morgan is hosting an “eclipse party” on Monday, starting at 12 PM, where you can make your own pinhole viewers. For the less DIY-inclined astronomer, the store also offers eclipse glasses.

The historic airport and museum once hosted the Wright Brothers. On Monday, starting at 1:30 pm, it’ll be hosting an eclipse “viewing party,” where glasses will be distributed for free while supplies last.

Laserpower meter

The analog output of the QUAD-4TRACK provides voltage that is directly proportional to the pulse energy or laser power irradiating each QUAD element. When the four voltage outputs are equal, the beam is centered on the QUAD detector. This provides a very useful tool when setting up our QUAD probes with your source for optical alignment.

Laser power detector for measurement up to 50 000 W that traps > 97 % of the incident light and handles high intensities of small beams.

Laser beamcharacterization

The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.

Strosniders Hardware The Bethesda location had a few eclipse glasses left on the shelves when Washingtonian called on Monday morning—but hurry, as they only have a limited amount.   College Park Aviation Museum The historic airport and museum once hosted the Wright Brothers. On Monday, starting at 1:30 pm, it’ll be hosting an eclipse “viewing party,” where glasses will be distributed for free while supplies last.   David M. Brown Planetarium Arlington County’s best venue for stargazing, run by its public school system, will be offering free eclipse glasses this Saturday and Sunday, before screenings of a special eclipse-themed show. Check their website for showtimes. This event has passed.    DC Public Libraries They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.    Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

Our large area pyroelectric quadrant detectors provide unique advantages over other position sensing detectors like silicon quads or lateral effect photodiodes. They are fast, handle high peak power of pulsed lasers without saturation and respond to lasers across the spectrum, from UV to Far IR and even THz. The QUAD-E is intended for use with pulsed sources at up to 1000 Hz, while the QUAD-P is designed for CW and high repetition rate (quasi CW) sources. Both types of detectors can also be used as standalone units, in an analog mode, for incorporation into your own system application. We can provide a lemo pigtail cable for this purpose.

Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

College Park Aviation Museum The historic airport and museum once hosted the Wright Brothers. On Monday, starting at 1:30 pm, it’ll be hosting an eclipse “viewing party,” where glasses will be distributed for free while supplies last.   David M. Brown Planetarium Arlington County’s best venue for stargazing, run by its public school system, will be offering free eclipse glasses this Saturday and Sunday, before screenings of a special eclipse-themed show. Check their website for showtimes. This event has passed.    DC Public Libraries They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.    Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

The Bethesda location had a few eclipse glasses left on the shelves when Washingtonian called on Monday morning—but hurry, as they only have a limited amount.

DC Public Libraries They’re not just for checking out books. DC public library branches are handing out solar eclipse glasses, free of charge, from now until April 8, the day of the eclipse. DCPL no longer has glasses in stock.    Montgomery County Public Libraries Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.    The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

Arlington County’s best venue for stargazing, run by its public school system, will be offering free eclipse glasses this Saturday and Sunday, before screenings of a special eclipse-themed show. Check their website for showtimes. This event has passed.

Like their neighbors to the South, Montgomery County’s public libraries are offering solar eclipse glasses, albeit only at select locations. You can visit their website, linked above, for more information.

The National Air and Space Museum Fittingly enough, the Air and Space Museum is handing out a limited number of solar eclipse glasses on a first-come, first-served basis from now until April 7, at both its location on the National Mall and in Virginia’s Udvar-Hazy Center. Only one pair of glasses will be given per person or family, but if you’re late or wanting more, fear not: they’ll also be for sale at the museums’ gift shops, in sets of three pairs, for $6.   Virginia State Parks Virginia is for lovers—of solar eclipses. All 42 of the Commonwealth’s state parks are selling eclipse glasses for $1 plus tax each, while supplies last. For us in the DMV, the closest options would be Lorton’s Mason Neck or Hillsboro’s Sweet Run parks.   Warby Parker The eyeglass retailer is offering up specs quite different—and cheaper—than its usual fare. The chain is giving away eclipse glasses at all locations until Monday, and with several stores across the DMV, you’re spoiled for choice. If you can’t make it, don’t fret: they also have a DIY guide on their site.  More: Eclipse Join the conversation! Share Tweet Arya Hodjat Editorial Fellow

We've developed a unique position calibration routine which allows you to calibrate our QUAD-4TRACK system when working with a uniformly round laser beam. It requires the use of a micrometer-driven linear stage (1-axis only). As you can see from the calibration screen on the left, the procedure involves zeroing the instrument, moving the QUAD probe to nine discrete positions (+2.000 to - 2.000 mm) and then capturing the QUAD readings. It then determines correction coefficients (last column) and applies them to the raw data to arrive at "corrected positions". The QUAD probe is now calibrated!

Another very handy feature is "data logging". This allows you to set up the QUAD-4TRACK to follow the displacement, energy and/or power of your laser over several minutes, hours or even days. Need to measure the "beam steering" of your laser as it warms up? This is how you do it! Need to measure the beam displacement vs laser repetition rate or energy level? Data logging will help you measure it!