Title: Device for realizing light beam automatic shaping using shape changing lens
Application Number: 200610169887 Application Date: 2006.12.30
Publication Number: 1987546 Publication Date: 2007.06.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G02B26/06;G02B27/00;G06N3/12
Applicant(s) Name: Inst. of Photoelectric Technology, CAS Address:
Inventor(s) Name: Yang Ping;Xu Bing;Yang Wei;Chen Shanqiu;Hu Shijie;
Attorney & Agent: jiayu zhong luji
Abstract:
    The device is composed of laser, telescope, deformation lens, CCD camera, D/A conversion card, high voltage amplifier, variable density attenuation disc, main control computer, image collection card, focusing lens, and genetic control algorithm. Using genetic algorithm to control the deformation lens, changing phase distribution of near field wave surface of laser beam, the invention reaches the purpose of changing light spot form in far field. The invention can realizes shaping laser beam without need of calculating relational expression between shape of light spot in far field and phase in near field. Gauss laser beam can be shaped to super Gauss beam, quadrate beam etc needed in practical application. The invention also can implement correcting static and quasi-static aberration included in laser beam effectively. Features are: simple structure, good generality, and easy of implementation. The invention is applicable to situation requiring specific shape of laser beam.
Time: 6