Laser and spectroscopic properties of chromium-activated forsterite
- Institute for Ultrafast Spectroscopy and Lasers, Department of Physics Electrical Engineering, City College of New York, New York, NY 10031 (US)
Room-temperature pulsed laser action has been obtained in chromium-activated forsterite (Cr:Mg{sub 2}SiO{sub 4}) for both 532-nm and 1064-nm pumping. Free running laser emission in both cases is centered at 1235 nm and has bandwidth of {similar to}20 nm. Slope efficiency as high as 22% has been measured. Using different sets of output mirrors and a single birefringent plate as the intracavity wavelength-selecting element tunability over the 1167--1268 nm spectral range has been demonstrated. Continuous-wave laser operation at room temperature has been obtained for 1064-nm pumping from a cw Nd:YAG laser. The output power slope efficiency is 6.8%. The gain cross section is estimated to be 1.1{times}10{sup {minus}19} cm{sup 2}. Spectroscopic studies suggest that the laser action is due to a center' other than the trivalent chromium (Cr{sup 3+}), presumably the tetravalent chromium (Cr{sup 4+}) in a tetrahedrally coordinated site.
- OSTI ID:
- 6908810
- Report Number(s):
- CONF-8810399-; CODEN: APCPC
- Journal Information:
- AIP Conference Proceedings (American Institute of Physics); (USA), Vol. 191:1; Conference: 4. international laser science conference, Atlanta, GA (USA), 2-6 Oct 1988; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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