✦ LIBER ✦

Polarization properties of laser-diode-pumped micro-grained Nd:YAG ceramic lasers

✍ Scribed by K. Otsuka; T. Ohtomo

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 289 KB
Volume: 5
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200810049

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✦ Synopsis

Detailed polarization properties have been examined in laser-diode-pumped (LD-pumped) micro-grained ceramic Nd:YAG lasers in different microchip cavity configurations. Stable linearly-polarized single-frequency oscillations, whose polarization direction coincides with that of an LD pump light, were observed in an external cavity scheme. In the case of a thin-slice laser scheme with coated reflective ends, ellipticallypolarized single-frequency operations took place in the low pump-power regime and dynamic modal instability appeared with increasing the pump power, featuring self-induced antiphase modulations among counter-rotating circularly-polarized modes having slightly different frequencies, with the total output being stabilized. 10 µm 1 µm Example SEM (scanning electron microscope) images of the etched surface of a micro-grained Nd:YAG ceramic sample

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