| Autor: |
Kim, Kyong H., Choi, Young S., Barnes, Norman P., Hess, Robert V., Bair, Clayton H., Brockman, Philip |
| Zdroj: |
Applied Optics; April 1993, Vol. 32 Issue: 12 p2066-2074, 9p |
| Abstrakt: |
Flash-lamp-pumped normal-mode and Q-switched 2.1-μm laser operations of Ho:Tm:Cr:YAG crystals have been evaluated under a wide variety of experimental conditions in order to determine an optimum lasing condition and to characterize the laser outputs. Q-switched laser-output energies equal to or in some cases more than the normal-mode laser energies were obtained in the form of a strong single spike by optimizing the opening time of a lithium niobate Q switch. The increase of the normal-mode laser slope efficiency was observed with the increase of the Tm concentration from 2.5 to 4.5 at. % at operating temperatures from 120 K to near room temperature. Laser transitions were observed only at 2.098 and 2.091 μm under various conditions. The 2.091-μm laser transition appeared to be dominant at high-temperature operations with low-reflective-output couplers and to have an energy-level assignment from 5313 cm^−1 to 534 cm^−1 or (and) from 5313 cm^−1 to 536 cm^−1. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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