Detection of Laser Direction and Wavelength Using the Unitized Wedge

Abstract:

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A novel detection method of laser direction and wavelength synchronal is fabricated by combining the four wedges and CMOS array camera. The unitized wedges we designed are composed of the four same wedges, and the joint is non-transparent. When the laser incident in the random direction, we calculate the distance of interference fringes in the four wedges, and deduce laser direction and wavelength. By simulation, it generates the drawings of optical path difference and the mini-distance when the minimum identification angle is 1o. In experiment, when we choose the angle of wedge is 0.01rad (≈0.57o), the distance of interference fringes is 10μm, larger than 8μm in CMOS array camera, so the interference fringes with the 532nm laser can be detected.

Info:

Periodical:

Advanced Materials Research (Volumes 255-260)

Edited by:

Jingying Zhao

Pages:

2155-2158

DOI:

10.4028/www.scientific.net/AMR.255-260.2155

Citation:

L. Zhang "Detection of Laser Direction and Wavelength Using the Unitized Wedge", Advanced Materials Research, Vols. 255-260, pp. 2155-2158, 2011

Online since:

May 2011

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Price:

$35.00

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