高亮度半导体激光器无输出耦合镜光栅外腔光谱合束
|
摘要
宽面发射半导体激光器的光谱合束技术对发展高功率直接半导体激光光源具有重要意义。光栅外腔光谱合束基于光栅的波长选择特性和外腔半导体激光技术,实现单个合束单元的光谱锁定和所有合束单元的合束输出,输出光束质量与单个合束单元相当,而亮度和功率得到很大的提高。基于无输出耦合镜光栅外腔光谱合束结构,实现了单个半导体激光短阵列的光谱合束,分析了光谱合束的输出光谱、输出功率和光束质量的特性,获得了70 A工作电流下40.8 W的连续输出功率,快轴和慢轴方向的光束质量分别为0.41 mm·mrad和9.16 mm·mrad(包含95%能量),相应的电光转换效率为38.4%,亮度高达67.90 MW/(cm~2·sr)。
Spectral beam combining of a broad area diode laser is a promising technique for direct diode laser applications. Grating external cavity spectral beam combination bases on wavelength selection characteristics of the grating and external cavity diode laser technology to achieve the lock of the single emitter spectrum and the combination of all the sub beam combining elements into one output. The beam quality of the output is equivalent to a single beam combining element, and the brightness and power are greatly improved, simultaneously. Based on the coupler free grating external cavity structure,spectral beam combination of a single diode laser short array stripe was realized. The characteristics of spectrum, power and beam quality of the output beam were analyzed. At the pump current of 70 A, a continuous output power of 40.8 W was obtained. The fast and slow axis beam quality were 0.41 mm·mrad and 9.16 mm·mrad(including 95% energy) respectively, the corresponding electro-optic conversion efficiency was 38.4% and the brightness was up to 67.90 MW/(cm~2·sr).
Spectral beam combining of a broad area diode laser is a promising technique for direct diode laser applications. Grating external cavity spectral beam combination bases on wavelength selection characteristics of the grating and external cavity diode laser technology to achieve the lock of the single emitter spectrum and the combination of all the sub beam combining elements into one output. The beam quality of the output is equivalent to a single beam combining element, and the brightness and power are greatly improved, simultaneously. Based on the coupler free grating external cavity structure,spectral beam combination of a single diode laser short array stripe was realized. The characteristics of spectrum, power and beam quality of the output beam were analyzed. At the pump current of 70 A, a continuous output power of 40.8 W was obtained. The fast and slow axis beam quality were 0.41 mm·mrad and 9.16 mm·mrad(including 95% energy) respectively, the corresponding electro-optic conversion efficiency was 38.4% and the brightness was up to 67.90 MW/(cm~2·sr).
引文
[1] Hengesbach S, Poprawe R, Hoffmann D, et al. Brightness and average power as driver for advancements in diode lasers and their applications[C]//High-Power Diode Laser Technology and Applications XIII. International Society for Optics and Photonics, 2015, 9348:93480B.
[2] Heinrich A, Hagen C, Harlander M, et al. Aplanatic beam shaping for diffraction limited beam circularization of tapered laser diodes[C]//High-Power Diode Laser Technology and Applications XII, International Society for Optics and Photonics, 2014, 8965:89650W.
[3] Fan T Y, Sanchez A, Daneu V, et al. Laser beam combining for power and brightness scaling[C]//Aerospace Conference Proceedings, 2000 IEEE, 2000, 3:49-54.
[4] Huang R K, Chann B, Burgess J, et al. Teradiode′s high brightness semiconductor lasers[C]//Components and Packaging for Laser Systems II, International Society for Optics and Photonics, 2016, 9730:97300C.
[5] Zimer H, Haas M, Nagel S, et al. Spectrally stabilized and combined diode lasers[C]//High Power Diode Lasers and Systems Conference(HPD), 2015 IEEE, 2015:31-32.
[6] Hengesbach S, Krauch N, Holly C, et al. High-power dense wavelength division multiplexing of multimode diode laser radiation based on volume Bragg gratings[J]. Optics Letters,2013, 38(16):3154-3157.
[7] Zhu Zhanda, Gou Long, Jiang Menghua, et al. High beam quality in two directions and high efficiency output of a diode laser array by spectral-beam-combining[J]. Optics Express, 2014, 22(15):17804-17809.
[8] Wang Lijun, Peng Hangyu, Zhang Jun, et al. Development of beam combining of high power high brightness diode lasers[J]. Infrared and Laser Engineering, 2017, 46(4):0401001.(in Chinese)王立军,彭航宇,张俊,等.高功率高亮度半导体激光器合束进展[J].红外与激光工程, 2017, 46(4):0401001.
[9] Zhou Q, Zhou C, Wei C, et al. Diode laser array by spectral beam combing with a transmission grating[C]//Holography,Diffractive Optics, and Applications VII, International Society for Optics and Photonics, 2016, 10022:1002217.
[10] Zhang Yan, Zhang Bin. Analysis of the spectral beam combining efficiency of diode laser[J]. Infrared and Laser Engineering, 2009, 38(5):864-872.(in Chinese)张艳,张彬.半导体激光器光束谱合成效率的分析[J].红外与激光工程, 2009, 38(5):864-872.
[11] Meng Huicheng, Wu Deyong, Tan Hao, et al. Experimental study on high brightness and narrow band of diode laser by spectral beam combining of grating-external cavity[J].Chinese Journal of Lasers, 2015, 42(3):22-28.(in Chinese)孟慧成,武德勇,谭昊,等.窄光谱高亮度半导体激光器光栅-外腔光谱合束实验研究[J].中国激光, 2015, 42(3):22-28.
[12] Yang L, Wu Z, Zhong Z, et al. Effect of crosstalk on combined beam characteristics in spectral beam combining systems[J]. Optics Communications, 2017, 384:30-35.
[13] Meng H, Ruan X, Du W, et al. Scaling the spectral beam combining channel by multiple diode laser stacks in an external cavity[J]. Laser Physics Letters, 2017, 14(4):045811.
[14] Tayebati P, Chann B. Two-dimensional multi-beam stabilizer and combining systems and methods:US,US9325144B2[P]. 2016-04-26.
[15] Roy L, Kohroh K. External optical feedback effects on semiconductor injection laser properties[J]. IEEE J Quantum, 1980, 16(3):347-355.
[16] Donati S, Horng R H. The diagram of feedback regimes revisited[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2013, 19(4):1500309.
[17] Haas M, Rauch S, Nagel S, et al. Beam quality deterioration in dense wavelength beam-combined broad-area diode lasers[J]. IEEE Journal of Quantum Electronics, 2017, 53(3):1-11.
[2] Heinrich A, Hagen C, Harlander M, et al. Aplanatic beam shaping for diffraction limited beam circularization of tapered laser diodes[C]//High-Power Diode Laser Technology and Applications XII, International Society for Optics and Photonics, 2014, 8965:89650W.
[3] Fan T Y, Sanchez A, Daneu V, et al. Laser beam combining for power and brightness scaling[C]//Aerospace Conference Proceedings, 2000 IEEE, 2000, 3:49-54.
[4] Huang R K, Chann B, Burgess J, et al. Teradiode′s high brightness semiconductor lasers[C]//Components and Packaging for Laser Systems II, International Society for Optics and Photonics, 2016, 9730:97300C.
[5] Zimer H, Haas M, Nagel S, et al. Spectrally stabilized and combined diode lasers[C]//High Power Diode Lasers and Systems Conference(HPD), 2015 IEEE, 2015:31-32.
[6] Hengesbach S, Krauch N, Holly C, et al. High-power dense wavelength division multiplexing of multimode diode laser radiation based on volume Bragg gratings[J]. Optics Letters,2013, 38(16):3154-3157.
[7] Zhu Zhanda, Gou Long, Jiang Menghua, et al. High beam quality in two directions and high efficiency output of a diode laser array by spectral-beam-combining[J]. Optics Express, 2014, 22(15):17804-17809.
[8] Wang Lijun, Peng Hangyu, Zhang Jun, et al. Development of beam combining of high power high brightness diode lasers[J]. Infrared and Laser Engineering, 2017, 46(4):0401001.(in Chinese)王立军,彭航宇,张俊,等.高功率高亮度半导体激光器合束进展[J].红外与激光工程, 2017, 46(4):0401001.
[9] Zhou Q, Zhou C, Wei C, et al. Diode laser array by spectral beam combing with a transmission grating[C]//Holography,Diffractive Optics, and Applications VII, International Society for Optics and Photonics, 2016, 10022:1002217.
[10] Zhang Yan, Zhang Bin. Analysis of the spectral beam combining efficiency of diode laser[J]. Infrared and Laser Engineering, 2009, 38(5):864-872.(in Chinese)张艳,张彬.半导体激光器光束谱合成效率的分析[J].红外与激光工程, 2009, 38(5):864-872.
[11] Meng Huicheng, Wu Deyong, Tan Hao, et al. Experimental study on high brightness and narrow band of diode laser by spectral beam combining of grating-external cavity[J].Chinese Journal of Lasers, 2015, 42(3):22-28.(in Chinese)孟慧成,武德勇,谭昊,等.窄光谱高亮度半导体激光器光栅-外腔光谱合束实验研究[J].中国激光, 2015, 42(3):22-28.
[12] Yang L, Wu Z, Zhong Z, et al. Effect of crosstalk on combined beam characteristics in spectral beam combining systems[J]. Optics Communications, 2017, 384:30-35.
[13] Meng H, Ruan X, Du W, et al. Scaling the spectral beam combining channel by multiple diode laser stacks in an external cavity[J]. Laser Physics Letters, 2017, 14(4):045811.
[14] Tayebati P, Chann B. Two-dimensional multi-beam stabilizer and combining systems and methods:US,US9325144B2[P]. 2016-04-26.
[15] Roy L, Kohroh K. External optical feedback effects on semiconductor injection laser properties[J]. IEEE J Quantum, 1980, 16(3):347-355.
[16] Donati S, Horng R H. The diagram of feedback regimes revisited[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2013, 19(4):1500309.
[17] Haas M, Rauch S, Nagel S, et al. Beam quality deterioration in dense wavelength beam-combined broad-area diode lasers[J]. IEEE Journal of Quantum Electronics, 2017, 53(3):1-11.