Single crystals of double tungstates find applications as laser materials having very good parameters. One of the intensively investigated material sis KGD(WO₄)₂ doped with rare earth elements. Single crystal of KGd(WO₄)₂ were grown with the use of Top Seeded Solution Growth technique from K₂W₂O₇ solvent. The crystals have low absorption loses and show high lasing efficiency. Optical investigations of as grown KGW:Nd single crystal confirmed their good optical quality and high absorption coefficient near 810 nm, what in connection with strong luminescence near 1067 nm allows fabrication of diode pumped microchip lasers working both in CW and giant pulse regime. Absorption and luminescence spectra of Nd³⁺ doped KGW single crystals are presented. Laser action was obtained in form of 128.5 kHz train of 100 ns giant pluses due to YAG:Cr⁴⁺ passive Q-switch.

Date Published: 10 August 2001
PDF: 5 pages
Proc. SPIE 4412, International Conference on Solid State Crystals 2000: Growth, Characterization, and Applications of Single Crystals, (10 August 2001); doi: 10.1117/12.435802

Published in SPIE Proceedings Vol. 4412:
International Conference on Solid State Crystals 2000: Growth, Characterization, and Applications of Single Crystals
Antoni Rogalski; Krzysztof Adamiec; Pawel Madejczyk, Editor(s)