Spectroscopic and Laser Properties of Sc Garnet Mixtures Doped by Cr3+ and Nd3+ Ions

V. G. Ostroumov; E. V. Zharikov; I. A. Shcherbakov; G. B. Loutts; A. I. Zagumenny; C. Pfistner; P. Albers; H. P. Weber

doi:10.1364/ASSL.1992.LM10

Advanced Solid State Lasers
OSA Proceedings Series (Optica Publishing Group, 1992),
paper LM10
•https://doi.org/10.1364/ASSL.1992.LM10

Spectroscopic and Laser Properties of Sc Garnet Mixtures Doped by Cr³⁺ and Nd³⁺ Ions

V. G. Ostroumov, E. V. Zharikov, I. A. Shcherbakov, G. B. Loutts, A. I. Zagumenny, C. Pfistner, P. Albers, and H. P. Weber

Advanced Solid State Lasers 1992

Santa Fe, New Mexico United States
ISBN: 1-55752-224-3

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V. G. Ostroumov, E. V. Zharikov, I. A. Shcherbakov, G. B. Loutts, A. I. Zagumenny, C. Pfistner, P. Albers, and H. P. Weber, "Spectroscopic and Laser Properties of Sc Garnet Mixtures Doped by Cr3+ and Nd3+ Ions," in Advanced Solid State Lasers, L. Chase and A. Pinto, eds., Vol. 13 of OSA Proceedings Series (Optica Publishing Group, 1992), paper LM10.

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Abstract

New mixtures of YSGG, GSGG, and GSAG doped with Cr³⁺ and Nd³⁺ have been investigated for their spectral and laser properties. These hosts allow a higher concentration of Nd³⁺ ions than YAG with less suffering from concentration quenching. Changing of the composition allows a variation of the Nd³⁺ emission cross-section and wavelength of lasing according to the requirements of the laser operation. The efficiency of Cr→Nd energy transfer in mixtured crystals is the same as for GSGG:Cr,Nd crystals. The absorption lines for diode pumping in the region of 800 nm are broader than in Nd:YAG. All mixtures have been operated in a quasi plano-concetric resonator end-pumped by a Ti: Sapphire laser at 809 nm. With a YSGG_0.67/GSAG_0.33:Nd³⁺ we achieved an output power of 579 mW at 1062 nm. With an absorbed pump power of 1.2 W and a threshold of 12 mW this corresponds to a slope efficiency of 48%.

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