Comparison between Nd:YAG and Nd:YLF laser oscillators, end pumped by high-brightness diode laser arrays

Raphael Lavi; Steven M. Jackel; Sagie Tsadka; Ofer Levi; Raphael Lallouz

doi:10.1117/12.150994

13 August 1993 Comparison between Nd:YAG and Nd:YLF laser oscillators, end pumped by high-brightness diode laser arrays

Raphael Lavi, Steven M. Jackel, Sagie Tsadka, Ofer Levi, Raphael Lallouz

Proceedings Volume 1971, 8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing; (1993) https://doi.org/10.1117/12.150994
Event: 8th Meeting in Israel on Optical Engineering, 1992, Tel Aviv, Israel

Abstract

With the goal of developing high efficiency diffraction limited, high repetition rate lasers, a 2 watt quasi-cw diode laser (SDL 2272-P1) was used to end pump Nd:YAG and Nd:YLF slabs. The 1 X 200 micrometers diode stripe was coupled via two lenses and an anamorphic prism pair to the TEM₀₀ mode of the cavity with an efficiency of 83%. A total light to light conversion efficiency of 44% was achieved in the free-running Nd:YAG laser with a slope efficiency of 48% when pumped at 808 nm. The measured efficiency in the free-running Nd:YLF when pumped in the (sigma) polarization at 809 nm was 32% with a slope efficiency of 34%. When pumped in the (pi) polarization, the corresponding Nd:YLF values were 25% and 28%, respectively. In both Nd:YAG and Nd:YLF, the output laser beam was diffraction limited at repetition rates of up to 1 kHz.

Citation Download Citation

Raphael Lavi, Steven M. Jackel, Sagie Tsadka, Ofer Levi, and Raphael Lallouz "Comparison between Nd:YAG and Nd:YLF laser oscillators, end pumped by high-brightness diode laser arrays", Proc. SPIE 1971, 8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing, (13 August 1993); https://doi.org/10.1117/12.150994

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