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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 1 — Jan. 1, 2002
  • pp: 18–27

Characterization of the laser crystal Nd:GdVO4

Huaijin Zhang, Junhai Liu, Jiyang Wang, Changqing Wang, Li Zhu, Zongshu Shao, Xianlin Meng, Xiaobo Hu, Minhua Jiang, and Yuk Tak Chow  »View Author Affiliations


JOSA B, Vol. 19, Issue 1, pp. 18-27 (2002)
http://dx.doi.org/10.1364/JOSAB.19.000018


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Abstract

Nd:GdVO4 crystal was grown by the Czochralski method. The absorption and fluorescence spectra of the crystal were measured at room temperature. The thermal expansion and the specific heat of the crystal were also measured. Laser outputs at 1.06 and 1.34 μm were achieved when a Nd:GdVO4 crystal sample with a high Nd doping concentration was pumped by a low-power laser diode (LD) at 808.5 nm, and visible green and red laser outputs of intracavity frequency doubling at 0.53 and 0.67 μm were also achieved when nonlinear KTiOPO4 and LiB3O5 crystal, respectively, were used. The highly Nd-doped Nd:GdVO4 crystal was pumped by a high-power LD, and a greater than 5-W laser output power at 1.06 μm was obtained. A low-Nd-doping concentration Nd:GdVO4 crystal sample was pumped by a high-power LD, yielding laser output powers at 1.06 and 0.53 μm; 0.53-μm green laser output was obtained when a KTiOPO4 crystal was used, and the output beam’s values were M2=1.76 at an output power of 14.3 W at 1.06 μm and M2=1.55 at an output power of 3.3 W at 0.53 μm. Acousto-optical Q-switched laser outputs at 1.06 and 0.53 μm were also achieved. A thermal lens made from a Nd:GdVO4 crystal was measured; it was weaker than that of a Nd:YVO4 crystal. Some important material parameters, such as temperature-induced changes in refractive index, material constant, thermal-stress resistance figure of merit, and power per unit length at the stress fracture limit, have been estimated.

© 2002 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(160.0160) Materials : Materials

Citation
Huaijin Zhang, Junhai Liu, Jiyang Wang, Changqing Wang, Li Zhu, Zongshu Shao, Xianlin Meng, Xiaobo Hu, Minhua Jiang, and Yuk Tak Chow, "Characterization of the laser crystal Nd:GdVO4," J. Opt. Soc. Am. B 19, 18-27 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-1-18

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