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Nonradiative relaxation and laser action in tunable solid state laser crystals
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Petricevic, V. Gayen, S. K. Alfano, R. R. |
| Copyright Year | 1989 |
| Description | Room-temperature pulsed laser action was obtained in chromium-activated forsterite (Cr:Mg2SiO4) for both 532 and 1064 nm pumping. Free running laser emission in both cases is centered at 1235 nm and has a bandwidth of approximately 30 nm. Slope efficiency as high as 22 percent was measured. Using different sets of output mirrors and a single birefrigent plate as the intracavity wavelength selecting element tunability over the 1167 to 1268 nm spectral range was demonstrated. Continuous wave laser operation at room temperature was obtained for 1064 nm pumping from a CW Nd:YAG laser. The output power slope efficiency is 6.8 percent. The gain cross section is estimated to be 1.1 x 10 to the 19th sq cm. Spectroscopic studies suggest that the laser action is due to a center other than the trivalent chromium (Cr 3+), presumably the tetravalent chromium (Cr 4+) in a tetrahedrally coordinated site. |
| File Size | 393988 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890010168 |
| Archival Resource Key | ark:/13960/t59d1v305 |
| Language | English |
| Publisher Date | 1989-03-16 |
| Access Restriction | Open |
| Subject Keyword | Lasers And Masers Pulse Duration Doped Crystals Laser Pumping Solid State Lasers Tunable Lasers Yag Lasers Chromium Laser Materials Birefringence Molecular Relaxation Neodymium Lasers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
