Chinese Journal of Lasers, Volume. 40, Issue 6, 608003(2013)
Detector Array for Measuring Temporal-Spatial Distribution of High-Repetition-Rate Pulsed Laser Beam Profile
Measuring far-field laser beam profile is an effective way to study the atmospheric transmission effects of high power laser and evaluate the pointing capability of high power laser system in a long distance. A laser beam profiler based on detector array is developed to measure the far-field beam intensity and temporal-spatial distribution of the high-repetition-rate pulsed laser beam, and the image of the far-field beam profile is reconstructed with the bilinear interpolation method. The detector array is composed of 297 Si-PIN photodiode detectors, with the spatial resolution of 1 cm in the central region, an effective sensitive area of 32 cm, and response wavelength between 300 nm and 1100 nm. The beam profiler is capable of measuring far-field beam profile of 1~20 kHz repetition rate pulsed laser, with minimal detectable pulse width of 10 ns, and dynamic range of energy density of 0.02~100 μJ/cm2.
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Feng Guobin, Wang Zhenbao, Feng Gang, Yang Pengling, Wang Qunshu, An Yuying. Detector Array for Measuring Temporal-Spatial Distribution of High-Repetition-Rate Pulsed Laser Beam Profile[J]. Chinese Journal of Lasers, 2013, 40(6): 608003
Category: measurement and metrology
Received: Feb. 5, 2013
Accepted: --
Published Online: May. 30, 2013
The Author Email: Guobin Feng (fgb02@eyou.com)