A 46-W Laser Diode Stack End-Pumped Slab Amplifier with a Pulse Duration of Picoseconds
YAN Ying1,2**, FAN Zhong-Wei1, NIU Gang2, YU Jin1, ZHANG Heng-Li3
1Academy of Opto-electronics, Chinese Academy of Sciences, Beijing 100094 2Beijing GK Laser Technology Co., Ltd., Beijing 100092 3School of Optoelectronics, Beijing Institute of Technology, Beijing 100081
A 46-W Laser Diode Stack End-Pumped Slab Amplifier with a Pulse Duration of Picoseconds
YAN Ying1,2**, FAN Zhong-Wei1, NIU Gang2, YU Jin1, ZHANG Heng-Li3
1Academy of Opto-electronics, Chinese Academy of Sciences, Beijing 100094 2Beijing GK Laser Technology Co., Ltd., Beijing 100092 3School of Optoelectronics, Beijing Institute of Technology, Beijing 100081
摘要A 46-W laser diode end-pumped amplifier is demonstrated by using a SESAM passively mode-locked oscillator and a compact LD stack end-pumped slab amplifier. For the oscillator, a 5-W picosecond mode-locked laser with a repetition frequency of 79 MHz is obtained with beam quality factors of M2<1.3. A beam shaping system made up of cylindrical lens is designed according to different sizes of the active medium in both directions, and a plane−plane cavity is used in the amplifier for high efficiency. At the absorbed pumping power of 174 W, the highest output power of 46 W is obtained with the slope efficiency of 29.5%. The beam quality factors M2 in both directions are measured to be 1.43 and 1.76, respectively.
Abstract：A 46-W laser diode end-pumped amplifier is demonstrated by using a SESAM passively mode-locked oscillator and a compact LD stack end-pumped slab amplifier. For the oscillator, a 5-W picosecond mode-locked laser with a repetition frequency of 79 MHz is obtained with beam quality factors of M2<1.3. A beam shaping system made up of cylindrical lens is designed according to different sizes of the active medium in both directions, and a plane−plane cavity is used in the amplifier for high efficiency. At the absorbed pumping power of 174 W, the highest output power of 46 W is obtained with the slope efficiency of 29.5%. The beam quality factors M2 in both directions are measured to be 1.43 and 1.76, respectively.
YAN Ying1,2**, FAN Zhong-Wei1, NIU Gang2, YU Jin1, ZHANG Heng-Li3. A 46-W Laser Diode Stack End-Pumped Slab Amplifier with a Pulse Duration of Picoseconds[J]. 中国物理快报, 2012, 29(3): 34204-034204.
YAN Ying, FAN Zhong-Wei, NIU Gang, YU Jin, ZHANG Heng-Li. A 46-W Laser Diode Stack End-Pumped Slab Amplifier with a Pulse Duration of Picoseconds. Chin. Phys. Lett., 2012, 29(3): 34204-034204.
[1] Keller U, Miller D A B, Boyd G D, Chiu T H, Ferguson J F and Asom M T 1992 Opt. Lett. 17 505
[2] Zhang S J, Wu E, Pan H F and Zeng H P 2004 IEEE J. Quantum Electron. 40 505
[3] Paschotta R, Ausder Au J and Spihler G J 2000 Appl. Phys. B 70 21
[4] Guo L, Hou W, Zhang H B, Sun Z P, Cui D F and Xu Z Y 2005 Opt. Express 13 4085
[5] Keller U 2003 Nature 424 831
[6] Siebold M, Hornung M, Hein J, Paunescu G, Sauerbrey R, Bergmann T and Hollemann G 2004 Appl. Phys. B 78 387
[7] Kleinbauer J, Knappe R and Wallenstein R 2005 Appl. Phys. B 80 315
[8] Yan X, Liu Q, Fu X, Wang Y X, Huang L, Wang D S and Gong M L 2008 Opt. Express 16 3356
[9] Peng R W, Guo L, Zhang X F, Li F Q, Cui Q J, Bo Y, Peng Q J, Cui D F, Xu Z Y and Tang L J 2009 Opt. Commun. 282 611
[10] Du K M, Wu N L, Xu J D, Giesekus J, Loosen P and Poprawe R 1998 Opt. Lett. 5 370
[11] Du K M, Li D J, Zhang H L, Shi P, Wei X Y and Diart R 2003 Opt. Lett. 2 87
[12] Nawata K, Okida M, Furuki K, Miyamoto K and Omatsu T 2009 Opt. Express 17 20816
[13] Ma Z, Li D J, Shi P, Hu P X, Wu N L and Du K M 2007 J. Opt. Soc. Am. B 24 1061
[14] Russbueldt P, Mans T, Rotarius G, Weitenberg J, Hoffmann H D and Poprawe R 2009 Opt. Express 17 12230
2012, Vol. 29 
