By Haiyin Sun
This ebook bargains the reader a realistic advisor to the regulate and characterization of laser diode beams. Laser diodes are the main popular lasers, accounting for fifty% of the worldwide laser industry. right dealing with of laser diode beams is the main to the winning use of laser diodes, and this calls for an in-depth knowing in their designated properties.
Following a quick advent to the operating ideas 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 booklet 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 publication covers beam characterization equipment, describing the dimension of spatial and spectral homes, together with wavelength and linewidth dimension innovations.
The ebook is a considerably revised and accelerated model of the name Laser Diode Beam fundamentals, Manipulations and Characterizations by means of an analogous writer. New subject matters brought during this quantity comprise: laser diode forms and dealing rules, 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 ways the topic in a realistic approach 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 resources for A Practical Guide to Handling Laser Diode Beams
The alignment is done when the far ﬁeld beam pattern is clean and symmetric, as shown in Fig. 6a. 1 Laser Diode Vendors Fabrication of laser diode chips require expensive equipment and tight process control. Laser diodes produced by brand name companies are of much higher quality, particularly have much longer lifetime, but can cost twice more than those laser diodes produced by unknown companies. In most applications, brand name laser diodes are worth the price. It is not a pleasant experience to stop the whole operation process and have service personnel coming to ﬁx expensive equipment only because the $100-worth laser diode in the equipment is blown out.
17. In Zemax sequential raytracing, any one surface can be selected as Global coordinate reference, the positions of all other surfaces are relative to this surface. In Zemax Gaussian beam modeling, the beam waist position is relative to any surface that is under consideration. We need to keep this difference in mind when interpreting the modeling results shown in Fig. 17. We also note that all the beam data shown for a surface is AFTER the beam propagating through the surface. Let us ﬁrst check the beam data at every surface for the Fundamental mode results shown in Fig.
This series lens is of high quality and expensive, and costs from $50 to $100 per lens. , which make laser diode collimating lenses. A few distributors resell many of these lenses. It appears to be more convenient to buy lenses from these distributors. Below is an incomplete list of distributors: Edmund Optics Optima Precision Thorlabs There are many different aspheric lenses in the market. Most of them are designed for other applications and will not well collimate laser diode beams. Users should be fully aware of this fact and only use those lenses specially designed for collimating or focusing laser diode beams.