PHASE MATCHING FOR 2ND HARMONIC-GENERATION IN KNBO3-TA CRYSTALS WITH ND-YAG-LASER AND GAAS-LASER WAVELENGTHS

Autor(en): SCHMIDT, N
VOIGT, P
HELLERMANN, B
BETZLER, K
HESSE, H
KAPPHAN, S
Stichwörter: LINBO3; Physics; Physics, Applied
Erscheinungsdatum: 1991
Herausgeber: AMER INST PHYSICS
Journal: JOURNAL OF APPLIED PHYSICS
Volumen: 69
Ausgabe: 6
Startseite: 3426
Seitenende: 3428
Zusammenfassung: 
Noncritical phase-matched second harmonic generation was measured in optically biaxial KNb(1-x)Ta(x)O3 mixed crystals in the orthorhombic phase. For Nd:YAG-(1064 nm) the coefficient d31 of the tensor of the nonlinear susceptibility was applied, while for the GaAs-laser (905 nm) the coefficient d32 was used. For both laser wavelengths the phase-matching temperature decreases with increasing Ta concentration. Noncritical phase-matching at room temperature can be reached with the GaAs-laser for a Ta concentration of almost-equal-to 9%. The corresponding value for the Nd:YAG laser is almost-equal-to 14%.
ISSN: 00218979
DOI: 10.1063/1.348525

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