Passively Q-switched diode-pumped Nd:YAG laser with intracavity optical parametric oscillator

Waldemar Zendzian; Jan Karol Jabczynski; Jacek Kwiatkowski

doi:10.1117/12.498255

8 July 2003 Passively Q-switched diode-pumped Nd:YAG laser with intracavity optical parametric oscillator

Waldemar Zendzian, Jan Karol Jabczynski, Jacek Kwiatkowski

Proceedings Volume 5036, Photonics, Devices, and Systems II; (2003) https://doi.org/10.1117/12.498255
Event: Photonics, Devices, and Systems II, 2002, Prague, Czech Republic

Abstract

The peak power of 0.65 MW and energy of 1.9 mJ at 1572 nm-wavelength was demonstrated in a singly resonant diode pumped intracavity optical parametric oscillator (IOPO). The energy of 4.3 mJ in fundamental mode at 1064 nm-wavelength with 15 ns-pulse duration in passively Q-switched regime was achieved in the arranged for IOPO Nd:YAG slab laser pumped by 300 W quasi-cw diode array. The KTP crystal, size of 20×5×5 mm³, 'x-cut' for non-critically phase-matched parametric generation at the signal wavelength of 1572 nm was used in experiments. In optimized, with respect to single pulse energy, IOPO cavity with output coupler of 50% transmission at signal wavelength the five-fold shortening of signal pulse duration with respect to 1064 nm pump radiation was observed. The twice-higher level of signal peak power of 650 kW, compared to pump laser at 1064nm in the same cavity without OPO, was achieved. The conversion efficiency of 44% with respect to 1064 nm pump beam and 3.8% with respect to diode pump energy was demonstrated.

Citation Download Citation

Waldemar Zendzian, Jan Karol Jabczynski, and Jacek Kwiatkowski "Passively Q-switched diode-pumped Nd:YAG laser with intracavity optical parametric oscillator", Proc. SPIE 5036, Photonics, Devices, and Systems II, (8 July 2003); https://doi.org/10.1117/12.498255

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