Intracavity second harmonic generation in passively Q-switched Nd:YAG laser

Shaul Pearl; Yehoshua Shimony; Haim Lotem; Michael Roth; Nahum Angert

doi:10.1117/12.281337

22 September 1997 Intracavity second harmonic generation in passively Q-switched Nd:YAG laser

Shaul Pearl, Yehoshua Shimony, Haim Lotem, Michael Roth, Nahum Angert

Proceedings Volume 3110, 10th Meeting on Optical Engineering in Israel; (1997) https://doi.org/10.1117/12.281337
Event: 10th Meeting on Optical Engineering in Israel, 1997, Jerusalem, Israel

Abstract

Intracavity second harmonic generation of a passively Q- switched cw Nd:YAG laser is studied. The saturable absorber used was a Cr⁴⁺:YAG crystal, and the second harmonic generator was a flux grown KTP crystal. The results were compared to a case of acousto-optic Q-switched case. To allow for a unidirectional second harmonic output beam, a folded laser cavity was constructed. However, due to a partially transmitting mirror in the cavity, two output counter propagating second harmonic beams, were generated. Unexpectedly, 180 degrees out of phase periodic power variations of the two output beams were observed, as a function of the distance from the nonlinear crystal to the mirror.

Citation Download Citation

Shaul Pearl, Yehoshua Shimony, Haim Lotem, Michael Roth, and Nahum Angert "Intracavity second harmonic generation in passively Q-switched Nd:YAG laser", Proc. SPIE 3110, 10th Meeting on Optical Engineering in Israel, (22 September 1997); https://doi.org/10.1117/12.281337

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