Laser action in chromium-activated forsterite for near-infrared excitation
Recently, the authors reported room-temperature pulsed-laser action in chromium-activated forsterite (Cr:Mg/sub 2/SiO/sub 4/). The free-running laser output was centered at 1235 nm with a spectral bandwidth (full width at half-maximum,FWHM) of 22 nm. The laser emission was stimulated by the 532-nm excitation of the green-red absorption band of the system. The crystal is characterized by a shallow absorption band spanning the 850-1200-nm wavelength range, which overlaps a significant portion of the emission spectrum and was previously thought to inhibit laser action in that region. In this communication, laser action in chromium-doped forsterite for 1064-nm excitation of this band is reported. The near infrared absorption thus turns out to be effective in populating the initial level of the lasing transition.
- Research Organization:
- City Univ. of New York, NY (USA)
- OSTI ID:
- 6040931
- Report Number(s):
- AD-A-205080/5/XAB
- Resource Relation:
- Other Information: Pub. in Applied Optics, Vol. 27, No. 20, 4162-4163 (15 Oct 1988)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LASER MATERIALS
MAGNESIUM SILICATES
SOLID STATE LASERS
ABSORPTION SPECTRA
EMISSION
EMISSION SPECTRA
EXCITATION
NEAR INFRARED RADIATION
ALKALINE EARTH METAL COMPOUNDS
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
INFRARED RADIATION
LASERS
MAGNESIUM COMPOUNDS
MATERIALS
OXYGEN COMPOUNDS
RADIATIONS
SILICATES
SILICON COMPOUNDS
SPECTRA
420300* - Engineering- Lasers- (-1989)