Laser capabilities of CuBr mixture excited by RF discharge |
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Authors: | M Grozeva M Kocik J Mentel J Mizeraczyk T Petrov P Telbizov D Teuner N Sabotinov J Schulze |
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Institution: | 1. Institute of Solid State Physics, Bulgarian Academy of Sciences, Tzarigradsko Chausse 72, 1784, Sofia, Bulgaria 2. Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952, Gdańsk, Poland 3. Department of Electrotechnical Engineering, Ruhr-University, Universit?tsstra?e 150, 44780, Bochum, Germany
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Abstract: | Our investigations demonstrated that utilizing copper bromide (CuBr) mixture as a source of Cu atoms in a RF-excited discharge
can be a promising alternative to the Cu sputtered system, when the development of Cu ion gas laser is considered. Both spectroscopic
and laser investigations showed that the threshold input power for lasing was reduced about 5 times using the CuBr-based system
instead of the Cu-sputtered system. Pulsed and CW laser oscillation on Cu+ transitions in the near IR spectral region was obtained in RF-excited He-CuBr discharge operated at 13.56 MHz and 27.12 MHz.
At input RF power of 800 W, a laser output power of 10 mW at the 780.8 nm Cu ion laser line was achieved. An increase of laser
output power by a factor of two, as well as better Cu vapour axial distribution and better discharge stability, was attained
when DC discharge was superimposed on the RF discharge. Laser gain on 11 UV Cu ion lines was observed in RF-excited Ne-CuBr
discharge. basing on the obtained results, we consider the CuBr laser system excited by RF discharge capable of generating
UV laser radiation at relatively low input power.
Received 4 January 1999 |
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Keywords: | PACS 42 60 By Design of specific laser systems - 42 55 Lt Gas lasers including excimer and metal-vapor lasers - 52 80 Pi High-frequency discharges |
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