Microwaves

A Practical Guide to Handling Laser Diode Beams by Haiyin Sun

By Haiyin Sun

This publication bargains the reader a pragmatic consultant to the keep an eye on and characterization of laser diode beams. Laser diodes are the main everyday lasers, accounting for fifty% of the worldwide laser industry. right dealing with of laser diode beams is the major to the profitable use of laser diodes, and this calls for an in-depth knowing in their exact properties.

Following a brief advent to the operating rules of laser diodes, the ebook describes the fundamentals of laser diode beams and beam propagation, together with Zemax modeling of a Gaussian beam propagating via a lens. The center of the e-book is anxious with laser diode beam manipulations: collimating and focusing, circularization and astigmatism correction, coupling right into a unmarried mode optical fiber, diffractive optics and beam shaping, and manipulation of multi transverse mode beams. the ultimate bankruptcy of the e-book covers beam characterization equipment, describing the dimension of spatial and spectral homes, together with wavelength and linewidth size ideas.

The e-book is a considerably revised and extended model of the name Laser Diode Beam fundamentals, Manipulations and Characterizations by means of an analogous writer. New issues brought during this quantity contain: laser diode kinds and dealing ideas, non-paraxial Gaussian beam, Zemax modeling, numerical research of a laser diode beam, spectral estate characterization equipment, and gear and effort characterization concepts. The publication techniques the topic in a pragmatic means with mathematical content material saved to the minimal point required, making the publication a handy reference for laser diode clients.

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Extra info for A Practical Guide to Handling Laser Diode Beams

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1 Collimating a Gaussian Beam To start designing optics using Zemax sequential raytracing, the first three parameters to be selected are the Field, General/Aperture, and Wavelength in the 46 2 Laser Diode Beam Basics Fig. 15 Zemax Lens Data Editor for modeling a Gaussian beam propagating through a paraxial lens System drop-down list. The first two parameters are irrelevant for modeling Gaussian beam, we randomly pick up 0° field and 5 mm aperture. We still need select wavelength since it is a parameter of Gaussian beam.

The emphasis is on using thin lens equation and numerical calculation to study the collimation and focusing characteristics of single transverse mode laser diode beams. Á Á Á Á Á Á Á Keywords Astigmatism Beam Beam waist Collimation Divergence Elliptical Fast axis Focal length Focus Gaussian Image distance Lens M2 factor Object distance Propagation Rayleigh range Raytracing Slow axis Spot size Transverse mode Á Á Á Á Á Á Á Á Á Á Á Á Single transverse mode laser diodes are most widely used. Their beams are elliptical, astigmatic, and have large divergence.

Below is an incomplete list of distributors: Blue Sky Research Digi-Key Power Technology Thorlabs Edmund Optics Lasermate Lasertel High-power laser diodes are used in more special applications by much smaller quantities. The unit price can be high and the manufacturers usually do retail sales. Distributors also sell many high-power laser diodes. 2 Laser Diode Module Vendors The task of assembling laser diode modules is easier than fabricating laser diode chips. Therefore, the brand reputation is not as important for laser diode module manufacturers.

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