Picosecond CO(sub 2) laser-pulse generation and amplification
- Inst. of Quantum Electronics, Zuerich (Switzerland)
- Argovian Electricity Board, Aarau (Switzerland)
This paper describes the generation of 30 ps 10 [mu]m laser pulses from an optical-free-induction-decay (OFID) 10 [mu]m CO[sub 2] laser system and the first realization of a UV-preionized high-pressure CO[sub 2] laser-pulse amplifier with Ernst-electrode profiles for these ultrashort CO[sub 2] laser pulses. For a given transverse electric discharge width, the Ernst profile permits to position the UV-radiation sources nearer to the discharge than with the Rogowski or Chang profile. A more homogeneous preionization of the discharge area is possible. Thus, the amplifier works up to 15 bar with a laser-gas mixture of 5:5:90 (CO[sub 2]:N[sub 2]:He). The authors amplified 30 ps OFID 10[mu] CO[sub 2] laser pulses up to 10 times by passing the amplifier twice. Thus they reached 10 [mu]m OFID pulse energies of 1 mJ. With the amplifier used as oscillator they have reached a maximum output energy of 600 mJ in longitudinal-multimode operation for 50 ns pulses.
- OSTI ID:
- 6386653
- Journal Information:
- IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Vol. 29:3; ISSN 0018-9197
- Country of Publication:
- United States
- Language:
- English
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