A binary beam-splitter for lidar beam-shaping in laser imaging application

Guoxing Zheng; Song Li; Hui Zhou

doi:10.1117/12.791139

12 March 2008 A binary beam-splitter for lidar beam-shaping in laser imaging application

Guoxing Zheng, Song Li, Hui Zhou

Proceedings Volume 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing; 66241J (2008) https://doi.org/10.1117/12.791139
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

In three-dimensional laser imaging system, multi-channel laser transmitting and receiving can increase the coverage area and provide better surface information and roughness than traditional single channel. The multi-channel laser beams can be realized by a diffractive beam-splitter, and in this paper the problem of designing a binary beam-splitter that produces 8×8 uniform intensity beams from a Gaussian-profile input beam is considered. To produce spots with even number, each period of the beam-splitter is divided into four phase-inverse parts to compress the even diffractive orders and reserve the odd orders. Simulated annealing algorism is applied in the beam-splitter design and in the numerical simulation, fabrication error tolerance, environmental issues, input field fluctuation and other factors are considered. The simulated results show that the performance of the device is quite insensitive to the amplitude fluctuation of input laser beam, the diffractive efficiency exceeds 77% and the uniformity between spots is about 0.12%, which confirm the efficiency of the design. This device will be fabricated in our lab soon.

Citation Download Citation

Guoxing Zheng, Song Li, and Hui Zhou "A binary beam-splitter for lidar beam-shaping in laser imaging application", Proc. SPIE 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing, 66241J (12 March 2008); https://doi.org/10.1117/12.791139

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available