Download A Practical Guide to Handling Laser Diode Beams by Haiyin Sun PDF
By Haiyin Sun
This e-book deals the reader a pragmatic advisor to the regulate and characterization of laser diode beams. Laser diodes are the main primary lasers, accounting for fifty% of the worldwide laser industry. right dealing with of laser diode beams is the major to the winning use of laser diodes, and this calls for an in-depth knowing in their certain properties.
Following a quick advent to the operating rules of laser diodes, the publication describes the fundamentals of laser diode beams and beam propagation, together with Zemax modeling of a Gaussian beam propagating via a lens. The middle of the ebook is worried 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 booklet covers beam characterization tools, describing the size of spatial and spectral homes, together with wavelength and linewidth size recommendations.
The ebook is a considerably revised and increased model of the identify Laser Diode Beam fundamentals, Manipulations and Characterizations via a similar writer. New themes brought during this quantity contain: laser diode forms and dealing rules, non-paraxial Gaussian beam, Zemax modeling, numerical research of a laser diode beam, spectral estate characterization tools, and gear and effort characterization suggestions. The booklet techniques the topic in a pragmatic method with mathematical content material saved to the minimal point required, making the ebook a handy reference for laser diode clients.
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Extra resources for A Practical Guide to Handling Laser Diode Beams
8 Laser Diode Mechanical Properties … 23 (a) (b) (c) (d) (e) (f) Fig. 23 a An ideal collimation situation. The laser diode chip is positioned at the focal point of the lens and has no boresight error. b A most common situation. The laser diode chip is positioned at the focal point of the lens, but has boresight error and the collimated beam has no boresight error. c–e The laser diode chip is not at the focal point of the lens, the collimated beam has boresight error. f A laser diode cap is well positioned inside a housing, but the chip is not at the focal point of the lens.
The beam data shown in the lower half of the box is for surface 3. We do not explain these data now, since they will be shown in the text box again. Click the Update button in the text box Paraxial Gaussian Beam Data, the relevant part of the text box will look like as shown in Fig. 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 are more interested in measuring and correcting the astigmatism. An astigmatic beam is another undesired characteristic of single TE mode laser diodes. 5 Polarization Laser diode beams are linear polarized. The polarization ratio is high from about 50:1 to about 100:1 for single TE mode laser diode, and around 30:1 for wide stripe multi-TE modes laser diodes. The polarization is in the slow axis direction. The high polarization ratio of laser diode beams can be either an advantage or a disadvantage, depending on the type of applications.