Directly diode-pumped tunable continuous-wave room-temperature Cr4+:YAG laser.
We report what is to our knowledge the first directly diode-pumped tunable (over 120 nm) continuous-wave Cr(4+): YAG laser, operating near 1.5 microm . At room temperature the laser delivered as much as 200 mW of power at 4 W of absorbed pump power. We also report observation of slow laser output degradation and bleaching in highly concentrated crystals, which we suggest is due to a photorefractive phenomenon.
Sorokina
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Institut für Photonik, Technische Universität Wien, Gusshausstrasse 27/378, A-1040 Vienna, Austria
Naumov
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Sorokin
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Wintner
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Shestakov
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