Efficient single-mode operation of a standing-wave dye laser |
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Authors: | M Pinard M Leduc G Trenec C G Aminoff F Laloë |
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Institution: | (1) Laboratoire de Spectroscopie Hertzienne de l'E.N.S., 24 rue Lhomond, F-75231 Paris Cedex 05, France;(2) Present address: Department of Technical Physics, Helsinki University of Technology, SF-02150 ESPOO 15, Finland |
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Abstract: | The selection of a single longitudinal mode of a dye laser can be achieved with double or triple Michelson reflectors instead
of Fabry-Perot etalons inside the laser cavity. These systems can be adapted to commercial multimode dye lasers. They provide
a high efficiency and a good geometrical quality of the output beam. With a 7 watt pump power (λ=514.5 nm line of the Ar+ laser), a tunable output power of 1 watt was obtained at the peak of R6G, in the main output beam; the total single-mode
power, including the auxiliary output beams, exceeded 1.4 watt. These results correspond to efficiencies of 14% and 20%, respectively
(24% and 30% slope efficiencies). We discuss in the text why these efficiencies are comparable to those of ring lasers. In
the infrared, with a 4.5 watt pump power (red lines of a Kr+ laser), 250 mW of single-mode output power in the main output beam was obtained at 780 nm with Oxazine 750. |
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Keywords: | 42 55 |
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