| Summary: | 碩士 === 國立交通大學 === 光電工程研究所 === 84 === We present a laser diode collimating and beam-shaping optics
using substrate-mode holograms. These elements have many merits,
such as thenormal input andoutput coupling , low aberrations ,
beam collimation and shaping in a compactmonolithic substrate .
This substrate-mode laser diode collimator is based on the
total internal reflection guiding and characteristics of
the re-construction of the cylindrical waves .Using the
hologram image formulas, thehologram aberration theory and the
intermediate hologram recording approach, we can derive the
required design parameters . We have also fabricated
thiselementand test its feasibility using the self-made
dichromate gelatinholographic films . The collimated and
shaped outputs of the test laserdiodeare shown in this article.
|
|---|
