Q-switched operation of an in-band-pumped Ho:LuAG laser with kilohertz pulse repetition frequency

We report continuous-wave (CW) and repetitively Q-switched operation of an in-band-pumped Ho:LuAG laser at room temperature. End-pumped by a Tm:YLF solid-state laser with emission wavelength of 1.91 μm, the CW Ho:LuAG laser generated 5.4-W output at 2100.7 nm with beam quality factor of M 2 ∼1.03 fo...

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Veröffentlicht in:	Applied physics. B, Lasers and optics Lasers and optics, 2010-02, Vol.98 (2-3), p.311-315
Hauptverfasser:	Yao, B.-Q., Duan, X.-M., Ke, L., Ju, Y.-L., Wang, Y.-Z., Zhao, G.-J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Beam characteristics: profile, intensity, and power spatial pattern formation Beams (radiation) Doped-insulator lasers and other solid state lasers Emission Engineering Exact sciences and technology Fundamental areas of phenomenology (including applications) Laser optical systems: design and operation Lasers Optical Devices Optics Photonics Physical Chemistry Physics Physics and Astronomy Pulse repetition frequency Pumps Q-switching Quality factor Quantum Optics Solid state lasers Wavelengths
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Beschreibung
Zusammenfassung:	We report continuous-wave (CW) and repetitively Q-switched operation of an in-band-pumped Ho:LuAG laser at room temperature. End-pumped by a Tm:YLF solid-state laser with emission wavelength of 1.91 μm, the CW Ho:LuAG laser generated 5.4-W output at 2100.7 nm with beam quality factor of M 2 ∼1.03 for an incident pump power of 14.1 W, corresponding to slope efficiency of 67% with respect to absorbed pump power. Up to 1.5-mJ energy per pulse at pulse repetition frequency (PRF) of 3 kHz and 4.5-W average power with FWHM pulse width of 28 ns at 5 kHz were demonstrated in repetitively Q-switched operation.
ISSN:	0946-2171 1432-0649
DOI:	10.1007/s00340-009-3747-x