Abstract
Undamped relaxation oscillations were observed from a short, simple dye laser using a laser dye mixture which was pumped at 337 nm using ns pulses. The dye solution contained Rh101 as first laser dye, together with DTDCI in double function as saturable absorber and second laser dye. Two trains of intense laser pulses were generated near 619 and 685 nm, with pulse durations of ca. 4 and 2 times the resonator transit time, respectively. This method of short-pulse generation is related to double mode-locking of dye lasers. Model calculations are used to describe the pulse generation by self-gain-switching, and to estimate radiative and nonradiative contributions towards saturation of the absorber dye.
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Ernsting, N.P., Nikolaus, B. Undamped relaxation oscillations due to self-gain-switching of laser dye mixtures. Appl. Phys. B 41, 25–30 (1986). https://doi.org/10.1007/BF00697523
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DOI: https://doi.org/10.1007/BF00697523