6 March 2013 Efficient Er:YAG lasers at 1645.55 nm, resonantly pumped with narrow bandwidth diode laser modules at 1532 nm, for methane detection
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Abstract
Eye safe laser operation at 1645.55 nm (6077 cm-1) of resonantly pumped Er:YAG laser systems is demonstrated in cw and Q-switched operation. High brightness diode laser modules emitting at 1532 nm have been utilized as pump sources providing an absorption efficiency of up to 96%. This leads to an overall efficiency of the Er:YAG laser of 30%. For cw operation, 9 W output power is possible at pump power of 30 W while Q-switching results in generation of more than 7 mJ pulses with duration of 60 ns and repetition rate of 500 Hz. The Er:YAG laser systems have been applied for methane detection measurements demonstrating their feasibility for CH4-DIAL applications
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H. Fritsche, H. Fritsche, O. Lux, O. Lux, C. Schuett, C. Schuett, S. Heinemann, S. Heinemann, W. Gries, W. Gries, H. J. Eichler, H. J. Eichler, } "Efficient Er:YAG lasers at 1645.55 nm, resonantly pumped with narrow bandwidth diode laser modules at 1532 nm, for methane detection", Proc. SPIE 8599, Solid State Lasers XXII: Technology and Devices, 85990G (6 March 2013); doi: 10.1117/12.2002333; https://doi.org/10.1117/12.2002333
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