PENG Hang-yu, LIU Yun, SHAN Xiao-nan, ZHANG Jun-long, FU Xi-hong, TONG Cun-zhu, WANG Li-jun. 2 600 W High Efficiency Laser Diode Source with Polarization Coupling[J]. Chinese Journal of Luminescence, 2011,32(10): 1036-1040
PENG Hang-yu, LIU Yun, SHAN Xiao-nan, ZHANG Jun-long, FU Xi-hong, TONG Cun-zhu, WANG Li-jun. 2 600 W High Efficiency Laser Diode Source with Polarization Coupling[J]. Chinese Journal of Luminescence, 2011,32(10): 1036-1040DOI:
2 600 W High Efficiency Laser Diode Source with Polarization Coupling
As the increasing applications of laser diodes in laser cladding and laser hardening
the single laser diode optical power can not meet the actual requirements. An improvement of the power and power density is necesary and it can be achieved by beam shaping and beam combination such as polarization coupling. The polarization coupling technology is used to couple two laser beams with thin-film plate polarizer. In this paper
two 808 nm vertically stacked arrays with an output power of 1 500 W was achieved. After fast axis and slow axis collimated
the polarization direction of one stacked arrays is rotated 90 through a half wave plate
thus
the polarization directions of two laser stack are vertical. The beams of two lasers are incident on thin-film plate polarizer; one transmits through it
and the other is reflected on it. Finally
two beams combine to one. Polarization coupling of two bars increases the power by a factor of 1.6
and the output power is 2 600 W
electro-optical conversion efficiency is more than 48%. The spot size is about 1 mm 2 mm. This source reaches an intensity of 130 kWcm
-2
. This laser can be directly applied to cladding
surface hardening and other fields.
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references
Ma Xiangzhu, Huo Jin, Qu Yi, et al. Thermal-resistor analysis of the laser chips with different size in C-mount package [J]. Chin. J. Lumin. (发光学报), 2011, 32 (2):184-187 (in Chinese).[2] Lin Zhiqi, Zhang Yang, Lang Yonghui, et al. Constant temperature control of semiconductor laser based on temperature characteristics of pn junction [J]. Chin. J. Lumin. (发光学报), 2009, 30 (2):223-227 (in Chinese).[3] Grenier P, Taillon Y, Labranche B, et al. Symmetrization device and laser diode system provided with the same:US,7260131 . 2007-08-01.[4] Spaeth W, Groetsch S, Moser R, et al. Microoptical device with mirrors: US,5808323 . 1998-09-15.[5] Gao Xin, Shinoda K, Saitoh M, et al. Laser light source and an optical system for shaping light from a laser-bar-stack:US,6943957 . 2005-09-13.[6] Feng Guangzhi, Gu Yuanyuan, Shan Xiaonan, et al. 808 nm high power diode laser stack with polarization coupling [J]. Chin. J. Lumin.(发光学报), 2008, 29 (4):695-720 (in Chinese).[7] Gu Yuanyuan, Feng Guangzhi, Shan Xiaonan, et al. 808 nm and 980 nm high power laser diode stack with wavelength coupling [J]. Opt. Precision Eng.(光学 精密工程), 2009, 17 (1):8-13 (in Chinese).[8] Ding Peng, Cao Yinhua, Su Guoqiang, et al. 1 kW high power diode laser with polarization coupling by Gran-Tylor prism [J]. Chinese Journal of Lasers (中国激光), 2009, 36 (2):290-293 (in Chinese).[9] Haake J M, Zediker M S. High power direct diode laser successes [J]. SPIE, 2004, 5336 :107-115.
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