Scaling of thin disk pulse amplifiers

Jochen Speiser; Adolf Giesen

doi:10.1117/12.776849

14 February 2008 Scaling of thin disk pulse amplifiers

Jochen Speiser, Adolf Giesen

Proceedings Volume 6871, Solid State Lasers XVII: Technology and Devices; 68710J (2008) https://doi.org/10.1117/12.776849
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

In the past decade, the Thin Disk laser design was very successful as a high power laser design for cw lasers with good beam quality and high efficiency. Several numerical models show that the actually demonstrated output powers are far below the scaling limits due to amplified spontaneous emission (ASE). Also pulsed lasers based on Thin Disk amplifiers achieved comparable high average power, but only with medium pulse energies (about 100 mJ). Numerical models show that ASE effects limit the possible pulse energy to values of a few Joule, using the typical high power cw Thin Disk laser design. To evaluate designs for higher pulse energies a time resolved numerical model of pump absorption and ASE was developed and combined with a model of pulse amplification. The evaluation is focused on quasi-cw pumped pulse amplifiers. It includes the analysis of temperature, stress, deformation and thermal lensing, using finite element methods. This numerical model is used to develop thin disk designs for high output energies.

Citation Download Citation

Jochen Speiser and Adolf Giesen "Scaling of thin disk pulse amplifiers", Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68710J (14 February 2008); https://doi.org/10.1117/12.776849

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