Abstract
Transversely pumped 1 cm long crystals are operated in a plan-parallel cavity with dielectric mirrors of 100% and 30% reflectivity. Relaxation-oscillations in the laser emission at 540 nm with frequencies in the range of (1 to 1.8)·109 s−1 are observed. A square root dependence on pump rate is shown and an internal loss coefficient of 5.4 cm−1 is derived.
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On leave from the Polish Academy of Sciences IF-FM, Fiszera 14, PL-80-952 Gdansk, Poland