Scaling of diode-pumped Cs laser: transverse pump, unstable cavity, MOPA

B. V. Zhdanov; M. K. Shaffer; R. J. Knize

doi:10.1117/12.839466

17 February 2010 Scaling of diode-pumped Cs laser: transverse pump, unstable cavity, MOPA

B. V. Zhdanov, M. K. Shaffer, R. J. Knize

Proceedings Volume 7581, High Energy/Average Power Lasers and Intense Beam Applications IV; 75810F (2010) https://doi.org/10.1117/12.839466
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

There has been recent interest in Diode Pumped Alkali Lasers (DPALs) and their scaling to higher powers. Scaling of DPALs to high powers requires using multiple pump sources such as laser diode arrays or stacks of arrays. Coupling of multiple pump beams into the laser gain medium can be realized using a transverse pumping scheme that is most efficient for the laser operating with large mode volume. We have demonstrated Cs laser with unstable resonator transversely pumped by 15 narrowband diode laser arrays. This laser operates on lowest transverse mode with a diameter of 7 mm with an optical-to-optical efficiency higher than 30%. An alternative power scaling approach: Master Oscillator and power Amplifier (MOPA) system with transversely pumped by multiple diode lasers Cs amplifier was studied experimentally and demonstrated high optical efficiency.

Citation Download Citation

B. V. Zhdanov, M. K. Shaffer, and R. J. Knize "Scaling of diode-pumped Cs laser: transverse pump, unstable cavity, MOPA", Proc. SPIE 7581, High Energy/Average Power Lasers and Intense Beam Applications IV, 75810F (17 February 2010); https://doi.org/10.1117/12.839466

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