Investigation of diode-pump absorption efficiency and thermo-optical effects in a high-power Yb : KGW laser

Investigation of diode-pump absorption efficiency and thermo-optical effects in a high-power Yb : KGW laser

Diode-pump absorption is experimentally studied in a high-power (Yb : KGW) laser in the presence and absence of lasing. The maximum absorption efficiency in the cw regime exceeds 77 % which is by a factor of 1.4 greater than the maximum absorption efficiency in the absence of lasing. The powers of t...

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Veröffentlicht in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2015-01, Vol.45 (3), p.211-215
Hauptverfasser: Kim, G.H., Yang, J., Lee, B., Sall, E.G., Chizhov, S.A., Yashin, V.E., Kang, U.
Format: Artikel
Sprache:eng
Schlagworte:
Aberration
ABSORPTION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Crystal structure
CRYSTALS
DIODE-PUMPED SOLID STATE LASERS
EFFICIENCY
GRAIN ORIENTATION
laser diodes
Lasers
Lasing
Lenses
optical pumping
Orientation
output power
POLARIZATION
pump power
Quantum electronics
solid-state laser
TUNGSTATES
Yb : KGW
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Zusammenfassung:Diode-pump absorption is experimentally studied in a high-power (Yb : KGW) laser in the presence and absence of lasing. The maximum absorption efficiency in the cw regime exceeds 77 % which is by a factor of 1.4 greater than the maximum absorption efficiency in the absence of lasing. The powers of thermo-optical lenses induced in laser crystals during lasing are measured. A strong dependence of the lens power and aberrations on the orientation of laser crystals relative to the propagation direction and polarisation is confirmed.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2015v045n03ABEH015684