Substrate-mode holographic elements for laser diode collimation and beam shaping

• Main Authors: Huang, Zhi-Xian, 黃志賢
• Other Authors: Der-Chin Su, Yang-Tung Huang
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/65594516102369337286

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.