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We have developed a normal-dispersion passively mode-locked ytterbium-doped fiber laser with a fundamental repetition rate higher than 400 MHz at a wavelength of ~1085 nm by use of a short linear cavity design.
Femtosecond Yb:YAG laser at 1053 nm was realized by optimized crystal length and doping concentration, stable mode-locking power of 180 mW was achieved under 2 W pump. Measurement shows 170 fs pulse duration and 7 nm spectrum bandwidth.
We demonstrate the generation of pulses with twenty-five microjoules of energy generated from a thin-disk oscillator at repetition rates below three megahertz with the potential to drive high field experiments. First micromachining experiments are presented.
We demonstrate a Fabry-Perot cavity, passively saturable-absorber-modelocked Yb-fiber femtosecond oscillator with up to 1.04 GHz fundamental repetition rate, enabling octave spanning continuum generation and self-referenced fCEO stabilization.
Pulses from harmonically-mode-locked fiber laser were amplified in Yb-fiber to average power of 45 watts in good-quality 3-ps-pulses, at 1.3-GHz repetition rate in a near diffraction-limited-beam. 15-watts-average-power at 520 nm is produced by second-harmonic generation.
Nd:YLF laser system has been developed to drive an electron photo-injector. A chain of mode-locked 1.5 GHz oscillator, preamplifier, and two powerful diode-pumped amplifiers deliver 6.4 kW long IR bunches which are converted to 262 nm.
We report on highly stable active continuous mode-locking in diode-pumped Nd:YVO4 with adjustable pulse durations between 34 ps and 1 ns. An average output power till 7.3 W, an excellent beam quality M2<.1 and transform-limited pulses were obtained.
We demonstrate a rapidly scanning all-fiber Fourier transform spectrometer based on a temporal scanning all-optical delay line constructed with two mode-locked 1-GHz Yb fiber lasers. An effective mirror scan rate of 7.5 km/s is achieved.
We are developing a 100-kW Nd:YAG cw solid-state laser system. Seven wavefront-corrected 15-kW MOPA (master oscillator power amplifier) laser chains are phase locked to achieve a single aperture output beam with good beam quality.
We report the generation of high-energy femtosecond pulses in a chirped-pulse oscillator based on an ytterbium-doped large-mode-area photonic crystal fiber. Output pulses with 800 fs duration and more than 90 nJ energy are generated.
All-in-fiber SESAM-modelocked self-starting fiber laser is demonstrated. Cavity dispersion is managed by a spliced-in PM all-solid photonic bandgap fiber. The laser directly delivers 1.25 nJ pulses of 280 fs duration.
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