Diffraction losses of Nd:YAG and Yb:YAG laser crystals

Based on space-dependent rate equations, the lowest threshold input power for a diode end-pumped solid-state laser is obtained for the pump spot size w p→0. However, as the pump beam waist is decreased, the thermally induced effects in the laser rod would be very high. Diffraction losses caused by r...

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Veröffentlicht in:Optics and laser technology 2001-03, Vol.33 (2), p.129-134
Hauptverfasser: Xie, Wenjie, Kwon, Young, Tam, Siu-Chung, Lam, Yee-Loy
Format: Artikel
Sprache:eng
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Zusammenfassung:Based on space-dependent rate equations, the lowest threshold input power for a diode end-pumped solid-state laser is obtained for the pump spot size w p→0. However, as the pump beam waist is decreased, the thermally induced effects in the laser rod would be very high. Diffraction losses caused by radial and tangential variations of refractive index have been analyzed and compared for the Nd : YAG and the Yb : YAG at room temperature ( 300 K ) and liquid-nitrogen temperature ( 77 K ).
ISSN:0030-3992
1879-2545
DOI:10.1016/S0030-3992(01)00007-X