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Thermal effect is still the most serious problem: it restricts the high power and high beam quality of solid laser to be further enhanced. The efficient thermal management is an important approach to suppress the thermal effect. In this paper, the thermal effect in a gas-cooled laser diode pumped multislab Nd:glass amplifier operating at a repetition rate is investigated in detail both theoretically and experimentally. The three-dimensional distributions of temperature, stress, strain, and birefringence are calculated by a finite element analysis. Based on these data, the thermally induced wavefront distortions and depolarization losses are determined with considering six slabs and one laser head. It is revealed that the theoretical data are in good agreement with the experimental results: the total wavefront distortion is 6.77 and a depolarization loss of more than 90% accumulates over six slabs when the heat deposition is 0.7 W/cm3.
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Keywords:
- laser diode pump /
- thermal effect /
- helium gas-cooled /
- Nd:glass laser amplifier
[1] Bruno L G, Phil A, Glen J 2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) San Diego, USA, June 3-7, 2012 p92
[2] Huang W F, Wang J F, Lu X H, Li X C 2013 Laser Phys. 23 035804
[3] Yan Y, Fan Z W, Niu G, Yu J, Zhang H L 2012 Chin. Phys. Lett. 29 034204
[4] Li S G, Ma X H, Li H H, Li F, Zhu X L, Chen W B 2013 Chin. Opt. Lett. 7 071402
[5] Bayramian A, Armstrong J, Beer G, Campbell R, Chai B, Cross R, Erlandson A, Fei Y, Freitas B, Kent R, Menapace J, Molander W, Schaffers K, Siders C, Sutton S, Tassano J, Telford S, Ebbers C, Caird J, Barty C 2008 J. Opt. Soc. Am. B 25 57
[6] Chanteloup J C, Albach D 2011 IEEE Photon. J. 3 245
[7] Mathias S, Markus L, Gunter H, Harald N, Igor T, Fabian R, Daniel A, Ulrich S 2014 Opt. Lett. 39 3611
[8] Krupke W 2000 IEEE J. Sel. Top. Quantum Electron. 6 1287
[9] Tso Y F, Daniel J R, Roshan L A, Juan R O, Bien C, Michael T, Joshua S 2007 IEEE J. Sel. Top. Quantum Electron. 13 448
[10] Erlandson A C, Aceves S M, Bayramian A J, Bullington A L, Beach R J, Boley C D, Caird J A, Deri R J, Dunne A M, Flowers D L, Henesian M A, Manes K R, Moses E I, Rana S I, Schaffers K I, Spaeth M L, Stolz C J, Telford S J 2011 Opt. Mater. Express 1 1341
[11] Ryo Y, Toshiyuki K, Takashi S, Takashi K, Tadashi I, Osamu M, Masahiro M, Hirofumi K, Hidetsugu Y, Junji K, Masahiro N, Noriaki M, Yasukazu I, Tadashi K 2008 Opt. Lett. 33 1711
[12] Carslaw H S, Jaeger J C 1986 Conduction of Heat in Solids (Oxford: Clarendon Press)
[13] Timoshenko S, Goodier J N 1951 Theory of Elasticity (New York: Mcgraw-Hill)
[14] Bullington A L, Sutton S B, Bayramian A J, Caird J A, Deri R J, Erlandson A C, Henesian M A 2011 Photonics West 2011 San Francisco, United States, Jan. 22-27, 2011 pp7916-7930
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[1] Bruno L G, Phil A, Glen J 2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) San Diego, USA, June 3-7, 2012 p92
[2] Huang W F, Wang J F, Lu X H, Li X C 2013 Laser Phys. 23 035804
[3] Yan Y, Fan Z W, Niu G, Yu J, Zhang H L 2012 Chin. Phys. Lett. 29 034204
[4] Li S G, Ma X H, Li H H, Li F, Zhu X L, Chen W B 2013 Chin. Opt. Lett. 7 071402
[5] Bayramian A, Armstrong J, Beer G, Campbell R, Chai B, Cross R, Erlandson A, Fei Y, Freitas B, Kent R, Menapace J, Molander W, Schaffers K, Siders C, Sutton S, Tassano J, Telford S, Ebbers C, Caird J, Barty C 2008 J. Opt. Soc. Am. B 25 57
[6] Chanteloup J C, Albach D 2011 IEEE Photon. J. 3 245
[7] Mathias S, Markus L, Gunter H, Harald N, Igor T, Fabian R, Daniel A, Ulrich S 2014 Opt. Lett. 39 3611
[8] Krupke W 2000 IEEE J. Sel. Top. Quantum Electron. 6 1287
[9] Tso Y F, Daniel J R, Roshan L A, Juan R O, Bien C, Michael T, Joshua S 2007 IEEE J. Sel. Top. Quantum Electron. 13 448
[10] Erlandson A C, Aceves S M, Bayramian A J, Bullington A L, Beach R J, Boley C D, Caird J A, Deri R J, Dunne A M, Flowers D L, Henesian M A, Manes K R, Moses E I, Rana S I, Schaffers K I, Spaeth M L, Stolz C J, Telford S J 2011 Opt. Mater. Express 1 1341
[11] Ryo Y, Toshiyuki K, Takashi S, Takashi K, Tadashi I, Osamu M, Masahiro M, Hirofumi K, Hidetsugu Y, Junji K, Masahiro N, Noriaki M, Yasukazu I, Tadashi K 2008 Opt. Lett. 33 1711
[12] Carslaw H S, Jaeger J C 1986 Conduction of Heat in Solids (Oxford: Clarendon Press)
[13] Timoshenko S, Goodier J N 1951 Theory of Elasticity (New York: Mcgraw-Hill)
[14] Bullington A L, Sutton S B, Bayramian A J, Caird J A, Deri R J, Erlandson A C, Henesian M A 2011 Photonics West 2011 San Francisco, United States, Jan. 22-27, 2011 pp7916-7930
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