Quite frequently the most popular way to focus a laser diode beam is to use a two lens system where one lens collimates the highly divergent beam and the second lens focusses it. Alternatively, a single aspheric lens can be used to focus the beam for direct focusing, but in most cases, it causes severe aberrations, larger beam and lots of diffractions. By definition, beam quality implies a measure for how well a laser beam can be focused.

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Apr 11, 2023 — It requires mechanically positioning all the optical components to accuracies of order ~wavelength of light and holding them in those precise ...

Nov 30, 2023 — The Camera Mount System is a lightweight yet robust solution for mounting cameras to an INOVATIV mobile workstation cart.

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Dec 5, 2011 — Low power objectives on a microscope typically have magnification levels of 4x or 10x and are used for locating and centering the specimen. High ...

A diode laser beam features low wavefront quality and high astigmatism - the divergence in the so-called fast axis is much higher than divergence in the slow axis. Various techniques are used for collimating such an astigmatic beam and in this consideration several objectives are important. The primary goal of collimation is to reduce divergence of a beam, the secondary goal is to eliminate astigmatism as much as possible, third – to improve wavefront quality, fourth – to make the beam less elliptical, fifth – to maintain good focusability.

Among his commitments to the optics industry and education, Robert dedicated the company’s Edmund Scientific Division to outreach, teaching thousands of young students throughout the U.S. about optics each year. In addition, he has lobbied on Capitol Hill in support of optics for more than 30 years. He is also very involved with the University of Arizona, serving on advisory boards and is the founding chairman of the Wyant College of Optical Sciences Advisory Board.

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The Field of View Calculator (or FOV) is used to help predetermine proper lens selection prior to installation. This Calculator will help with a preview to ...

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Among his many industry accolades, Robert was named Fellow of the International Society for Optics and Photonics, SPIE, in 2021. This prestigious honor is a distinction recognizing individuals for their technical accomplishments and for their service to the general optics community. Robert is a graduate of Georgetown University's McDonough School of Business and is an exceptional Horseman.

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Mar 24, 2022 — The function of objective lenses is to magnify objects enough for you to see them in great detail. Parts of a Microscope. Every microscope has ...

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Robert M. Edmund, CEO and Chairman of the Board of Directors for Edmund Optics, is well known for his expertise in business strategy, optical manufacturing and product development, as well as global catalog marketing. He has over 50 years of professional contributions in the field of optics and photonics.

We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples. Today, Arizona is home to 22 federally recognized tribes, with Tucson being home to the O’odham and the Yaqui. Committed to diversity and inclusion, the University strives to build sustainable relationships with sovereign Native Nations and Indigenous communities through education offerings, partnerships, and community service.

The divergence requirement in microscopy and spectroscopy is often less than 2 mrad (full angle) or even less than 1.5 mrad. In order to meet this requirement of modern analytical instruments, laser beams have to be collimated. This can be understood as putting a lens or a set of lenses in front of the laser cavity – does not matter be it a semiconductor laser cavity or a short DPSS resonator. However, for different types of lasers (diode and DPSS) the beam specifications are completely different.

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In appreciation for Robert’s arduous commitment to help advance the field of optics, the Robert M. Edmund Endowed Chair in Optical Sciences was established by his long-time friend and Edmund Optics board member, Dr. John P. Schaefer, and the Fredrick Gardner Cottrell Foundation.

Oct 16, 2024 — 5 Different Types of Lasers Used in Engraving · CO2 Lasers · Fiber Lasers · Diode Lasers · UV Lasers · Nd: YAG Lasers. The Nd: YAG laser cutting ...

In 1942, Robert’s father, Norman Edmund, founded a mail-order company, Edmund Scientific, providing consumers with optical devices. Within a decade, Norman's small optical surplus company became famous as the go-to source for telescopes, microscopes, science toys and gadgets of every description. In 1976, Robert assumed the leadership role and has since overseen the growth and re-positioning of the company, now called Edmund Optics, to its current emphasis. Today, Edmund Optics is regarded as a leading producer of optics, coatings, imaging systems and photonics supporting the worldwide technical community.

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The laser beam is focused through the focal lens. The focal lens acts like a magnifying glass and sunlight. For a 55mm lens, the laser beam passes through the lens and converges to the smallest point at about 55mm from the edge of the lens. The laser beam is concentrated to the smallest size at this "spot".

The most simple and popular way is to collimate a laser diode beam by using a single aspheric lens. (see Fig. 1). The larger is the focal length of this lens, the larger will the beam diameter be after collimation. Furthermore, if a certain beam adjustment has to be made, for example in order to expand the beam radius of a collimated beam, two lens system is often used - the so-called telescope. One lens with a negative focal length and the other with a positive one creates a setup to collimate and expand or shrink the beam.

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If you want a smaller collimating laser beam, you must accept a larger divergence; On the contrary, if we want to keep the collimation of light over a long distance, it must get a larger beam size.

Quite often CW lasers have a short cavity. The resonator of microchip DPSS lasers may vary from less than a millimeter to few millimeters. Cavities of single-mode laser diodes are in the range of hundreds of microns. Generally speaking, such short cavities produce highly divergent beams, which are not very usable in optical systems.

Also at Wyant College, Robert established an undergraduate student scholarship, named for his father, and a graduate student scholarship bearing his own name to help further the academic and research interests of future generations of optical engineers.

Beam expanders are useful laser accessories when the beam diameter must be increased. However, their main function is to decrease the divergence of the laser ...

by EMF Curado · 2024 — The interaction between polariser-linearly polarised light is construed within the context of this quantum formalism. Each density matrix for ...