Highly scalable, resonantly cladding-pumped, Er-doped fiber laser with record efficiency.

We report the performance of a resonantly cladding-pumped, Yb-free, Er-doped fiber laser. We believe this is the first reported resonantly cladding-pumped fiber-Bragg-grating-based, Er-doped, large-mode-area (LMA) fiber laser. The laser, pumped by fiber-coupled InGaAsP/InP laser diode modules at 1,532.

Directly Single-Diode-Pumped Continuous-Wave Yb(3+):YAG Laser Tunable in the 1047-1051-nm Wavelength Range.

We have demonstrated tunability in a wavelength range of 1047-1051 nm, using the lowest pumping power known to us (1.4 W at 972 nm), for a cw single-diode-pumped Yb:YAG laser. The output power was 166 mW in the multimode regime and 73 mW in the fundamental transverse-mode regime.

Comparative study of tunable room-temperature laser operation in the 900-1100-nm range: LiF:F2+ and Ti3+:sapphire.

We report on a comparative evaluation of efficient room-temperature solid-state lasers based on Ti:sapphire and LiF:F(2)(+) operating in the 900-1100-nm range. LiF:F(2)(+) lasers are shown to operate with substantially lower threshold, broader tuning, and higher output pulse energies. The shorter fluorescence lifetime in LiF:F(2)(+) leads to higher peak output powers and a considerable reduction in buildup-time fluctuations.

Diode-Pumped Tunable Room-Temperature LiF:F(2)(-) Color-Center Laser.

Pulsed room-temperature tunable operation of a diode-pumped LiF:F(2)(-) laser has been demonstrated for the first time to the author's knowledge. The LiF:F(2)(-) oscillator was tunable in the 1122-1201-nm range. In the free-running mode, with a nonselective resonator, the LiF:F(2)(-) laser showed a 4% optical-to-optical conversion efficiency and a measured 2.

Ultrabroadband operation of a cr(4+): forsterite laser by use of a spatially dispersed resonator.

Ultrabroadband (half-width of 88 nm) nanosecond Cr(4+):forsterite oscillation was achieved simultaneously in the 1170-1340-nm range (1085 cm(-1)) by use of a spatially dispersed resonator with an intracavity prism pair. The laser demonstrates 4.8% real pump-to-laser efficiency.