Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG
- 1 June 1988
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Quantum Electronics
- Vol. 24 (6), 924-933
- https://doi.org/10.1109/3.213
Abstract
Spectroscopic measurements and analysis of diode laser-pumped operation of Tm,Ho:YAG at 2.1 mu m at room temperature have been performed. The peak effective stimulated emission cross section is measured to be 9*10/sup -21/ cm/sup 2/ at 2.091 mu m and the upper state lifetime is 8.5 ms. Under diode laser pumping, thresholds of 4.4 mW of absorbed power and slope efficiency of 19% have been demonstrated. Calculations of threshold power are performed based on the spectroscopic measurements. An energy transfer upconversion process is identified which leads to a sublinear rise in upper-state population with pump power.Keywords
This publication has 21 references indexed in Scilit:
- Cr-SENSITIZED RARE EARTH GARNET LASERS AT ROOM TEMPERATURELe Journal de Physique Colloques, 1987
- Efficient holmium:yttrium lithium fluoride laser longitudinally pumped by a semiconductor laser arrayApplied Physics Letters, 1987
- CW diode-pumped Tm3+, Ho3+:YAG 2.1 μm room-temperature laserElectronics Letters, 1987
- Lasing of holmium ions as a result of the5I7→5I8transition at room temperature in an yttrium scandium gallium garnet crystal activated with chromium, thulium, and holmium ionsSoviet Journal of Quantum Electronics, 1986
- Active medium of lasers operating in the 2-μspectra range and utilizing gadolinium scandium gallium garnet crystalsSoviet Journal of Quantum Electronics, 1986
- cw double cross pumping of the 5I7–5I8 laser transition in Ho3+-doped garnetsApplied Physics Letters, 1986
- Diode-pumped 2 μm holmium laserElectronics Letters, 1986
- Vibronic interactions in Nd:YAG resulting in nonreciprocity of absorption and stimulated emission cross sectionsIEEE Journal of Quantum Electronics, 1982
- Energy transfer in concentrated systemsPublished by Springer Nature ,1980
- EFFICIENT, HIGH-POWER COHERENT EMISSION FROM Ho3+ IONS IN YTTRIUM ALUMINUM GARNET, ASSISTED BY ENERGY TRANSFERApplied Physics Letters, 1966