Highly efficient continuous-wave intracavity frequency-doubled Nd:YVO4-LBO laser at 457 nm under diode pumping into the emitting level 4F3/2
- 143 Downloads
The continuous-wave high efficiency laser emission of Nd:YVO4 at the fundamental wavelength of 914 nm and its 457 nm second harmonic obtained by intracavity frequency doubling with an LBO nonlinear crystal is investigated under pumping by diode laser at 880 nm into emitting level 4F3/2. 6.5 W at 457 nm with M 2=1.8 was obtained from a 5-mm-thick 0.4 at.% Nd:YVO4 laser medium and a 15-mm-long LBO nonlinear crystal in a Z-type cavity for 18.6 W absorbed pump power. An optical-to-optical efficiency with respect to the absorbed pump power was 0.35. Comparative results obtained for the pump with diode laser at 808 nm, into the highly-absorbing level 4F5/2, are given in order to prove the advantages of the 880 nm wavelength pumping.
PACS42.55.Rz 42.70.Hj 78.55.Kz
Unable to display preview. Download preview PDF.
- 4.J. Gao, M. Larionov, J. Speiser, A. Giesen, A. Douillet, J. Keupp, E.M. Rasel, W. Ertmer, in Technical Digest of the Conference on Lasers and Electro-Optics, Long Beach, CA, USA, May 19–24, 2002 (CLEO’02), p. 157 Google Scholar
- 17.T. Kellner, C. Czeranowsky, G. Huber, in Novel Lasers and Devices-Basic Aspects. OSA Technical Digest (Optical Society of America, 1999), paper LTuD2 Google Scholar