I do. I forgot how evil the internet is, and the last thing I want to do is cause Russ any grief. I’m going to put a sticky note on my monitor so I don’t forget next time .

P polarized lightapp

By the way, some people call a laser beam s-polarized, when its polarization is vertical, i.e., perpendicular to the lab's floor. It is better, though, to restrict the terms s polarization and p polarization to cases where the polarization direction with respect to a plane of incidence is relevant. For example, if you have a Brewster-angled prism in the common orientation where the reflected beam stays horizontal in direction, s polarization according to the first definition above is vertical. However, if you turn the prism such that the reflected beam goes upwards, that will change, of course.

After swapping out the OEM head on my OMTECH ZF2028-60, for Russ Sadler’s lightweight version, I ended up with six different “C” series tube/lens/nozzle combination to choose from. I still have one empty tube left, and I was wondering, is there is any value in getting a 3" or 4" focal length lens? Currently the longest FL lenses I have are a D20 FL63.5 GaAs, and a D20 FL63.5 ZnSe. I mostly engrave Acacia cutting boards using Russ Sadlers compound lens kit (which is phenomenal), but I’ve started cutting some thicker acrylic (4 to 6mm) and plywood for other projects and I’m struggling with the thicker materials a bit. I haven’t been able to find much information on when it’s appropriate to use a longer FL lens, so that’s why I’m asking the LightBurn brain trust.

One of the most common questions we get is regarding the difference between short and long focal length lens. Usually, the lower the focal length (1.5”, 2”), the finer the point size of the beam.  Traditionally, 1.5” or 2” focal length lens...

Intensity evolution of the LP11 mode in a tapered fiber. In the tapered region, most of the light is lost into the fiber cladding

Circularlypolarized light

The Cloudray 101.6mm lens is on order and I’ve got both the 18mm and 30mm nozzles in the spare parts bin, so I should be G-T-G when the lens gets here. Thanks for the info (and image) Jack.

I removed his email from your post… the bots have a field day with them… I think I had pm’d him Russ’s email… Hope you don’t mine…

P polarized lightmeaning

Can I ask where you bought your Russ Sadler LW head from as it is not on the Cloudray website and I can’t find any other link to it? Many thanks.

I couldn’t make up my mind whether to get the 3" or the 4", I figured you would chime in and give me a nudge in one direction or another. Thanks

Linearlypolarized light

Note: this box searches only for keywords in the titles of articles, and for acronyms. For full-text searches on the whole website, use our search page.

Ellipticallypolarized light

Wikipedia says that TE = s, TM = p. Are these notations completely replaceable? I don't think so, but I couldn't find clear explanation of it.

The Compound / Universal Engraving Nozzle is designed by SarbarMultimedia. If you need further info about this nozzles, please follow SarbarMultimedia's Youtube Channel: https://www.youtube.com/watch?v=ATu-7EGZGMA&t=823s Compond Engraving...

Abstract: There are conflicting definitions of s and p polarization in the scientific literature. What some people call p polarization, is s polarization for others. Obviously, that can cause confusion.

s-polarization vsppolarization

Jack’s the one that got me interested in switching over to Russ’ lightweight head. I installed it on my OMTECH ZF2028-60E. Jack is the resident expert on the subject, but I am more than willing to share my experience with what I went through putting it on my machine (you can buy the adj. head mount from Cloudray). You can reach Russ by email at removed…

By submitting the information, you give your consent to the potential publication of your inputs on our website according to our rules. (If you later retract your consent, we will delete those inputs.) As your inputs are first reviewed by the author, they may be published with some delay.

If you want to place a link to this article in some other resource (e.g. your website, social media, a discussion forum, Wikipedia), you can get the required code here.

N03 nozzle is used for diameter18mm focal length38.1mm Lens. Cloudray,Laser Nozzles,CO2 Laser,CO2 Mechanical Parts,Nozzles & Lens Tube,N03,Air Assistant System

P polarized lightformula

I’ve done work with the compound, then switched to the 4" and ran the cut… works great. With this mount system, lens positioning after a lens tube change it’s very accurate.

Planepolarized light

Indeed I found such a statement on the page https://en.wikipedia.org/wiki/Polarization_(waves) (under “s and p designations”), and some others sources show similar things. However, I don't agree with that. In my opinion, one should not use the terms transverse-electric and transverse-magnetic (https://en.wikipedia.org/wiki/Transverse_mode) in the context of electromagnetic waves propagating in a simple homogeneous medium, where both electric and magnetic fields are perpendicular to the propagation direction. These terms are appropriate in the context of waveguide modes and the like, where we do have guided light. TE then means that the electric field is perpendicular to the propagation direction, while the magnetic field is not; a plane of incidence does not occur there.

Please do not enter personal data here. (See also our privacy declaration.) If you wish to receive personal feedback or consultancy from the author, please contact him, e.g. via e-mail.

Note: the article keyword search field and some other of the site's functionality would require Javascript, which however is turned off in your browser.

This article is a posting of the Photonics Spotlight, authored by Dr. Rüdiger Paschotta. You may link to this page and cite it, because its location is permanent. See also the RP Photonics Encyclopedia.

Check out the chart. Using 6mm material the 4" (101.6mm) has a depth of 5.6mm not enough to maintian a good beam through the material. If you set your focus to 1/2 the material thickness then you only need 3mm on each side. It’s still 6mm but the beam center at material center will put most of the power is where you need it.

Here you can submit questions and comments. As far as they get accepted by the author, they will appear above this paragraph together with the author’s answer. The author will decide on acceptance based on certain criteria. Essentially, the issue must be of sufficiently broad interest.

It is quite common to talk about s-polarized and p-polarized laser beams, incident on optical surfaces or diffraction gratings. Therefore, it is quite disturbing that there are conflicting definitions in the scientific literature:

These are then no longer relevant: the optical effects will not depend on the polarization direction, assuming non-birefringent materials.

4” lens are fine except you still need to get air down into the cut. In my case I need a long nozzle which is difficult to find. My attempts to print one have now worked out. It would be interesting to see how others supply air to long lens.