Abstract
Realization of a compact, robust, highly stable, and efficient solid-state distributed feedback (DFB) dye laser based on pyrromethene 580-doped modified poly-(methyl methacrylate) embedded into nanoporous glass host is reported. A diode-pumped solid-state STA01SH-500 Nd:LSB microlaser (λ=532 nm; τ0.5∼0.5 ns; EP≤80 μJ; f≤500 Hz) is used as a pump source. When pumped well above threshold, a DFB laser emits a train of ultrashort pulses (τ≤1 ns; τ0.5<0.5 ns; Δλ0.5≤0.01 nm), while at excitation intensities not far from threshold, single transform-limited picosecond pulses (τ0.5≤40 ps; τ0.5Δν0.5∼0.3), tunable from 541 to 598nm, are generated. The DFB lasing efficiency reaches ∼60% upon an energy stability of ∼1.4% and an overall service life of the active element of ∼9×107 laser shots. More than an order of magnitude increase in the temperature stability of a lasing wavelength as compared with ethanol solutions of laser dyes is practically demonstrated.
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