Electronic and thermal lensing in diode end-pumped Yb:YAG laser rods and discs

Journal Article · Thu Dec 31 04:00:00 EST 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N12ABEH014160· OSTI ID:21471081

Antipov, Oleg L; Anashkina, E A; Fedorova, K A ^[1]

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1. Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)

The lensing effects in diode end-pumped Yb:YAG laser rods and discs are studied. Two mechanisms of refractive-index changes are taken into account, thermal and electronic (due to the difference between the excited- and ground-state Yb{sup 3+} polarisabilities), as well as pump-induced deformation of the laser crystal. Under pulsed pumping, the electronic lensing effect prevails over the thermal one in both rods and discs. In rods pumped by a highly focused cw beam, the dioptric power of the electronic lens exceeds that of the thermal lens, whereas in discs steady-state lensing is predominantly due to the thermal mechanism. (active media)

• OSTI ID: 21471081
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 12 Vol. 39; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAMS
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DIODE-PUMPED SOLID STATE LASERS
ELECTRICAL PROPERTIES
ELECTROSTATIC LENSES
IONS
LASERS
LENSES
NEODYMIUM LASERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POLARIZABILITY
PUMPING
REFRACTIVE INDEX
SOLID STATE LASERS
STEADY-STATE CONDITIONS
YTTERBIUM IONS