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This is the first time that significant Stokes output power of 0.88 W at 990 nm has been achieved using a three-level fundamental transition (quasi-cw Nd:YLF laser) with stimulated Raman scattering in a KGW crystal.
We present a gain-switched-diode-seeded 1034.5-nm master oscillator power amplifier, employing direct amplification through standard commercial Yb3+-doped fibres to generate 15.6µJ-pulse-energy, 126kW-peak-power, picosecond pulses with 3dB spectral bandwidth of 0.87nm.
We present the first demonstration of nanosecond-pulsed fiber MOPA systems seeded by semiconductor laser diodes at 2 µm incorporating arbitrary pulse shaping capabilities, achieving up to 1.0 mJ (12.5 kHz, 100 ns) pulse energy.
We present simple and efficient laser schemes based on newly developed Er-doped fibers cladding pumped at 976 nm. 103 W CW-power amplifier with 37 % conversion efficiency and 1.5 mJ-pulse energy nanosecond laser were demonstrated.
We report a high peak power monolithic nanosecond pulsed fiber laser in MOPA configuration. The system can produce ∼ 709 kW peak power for 3.3 ns fiber laser pulses at 10 kHz repetition rate.
We present the shortest pulses of any modelocked thin disk laser (TDL): a SESAM modelocked Yb:CALGO TDL generates 62-fs pulse duration at 5.1 W average power and we present new noise characterization.
A diode-pumped Yb:CLNGG laser is mode-locked with a single-walled carbon nanotube saturable absorber achieving pulse durations as short as 90 fs at ∼1049 nm and maximum average output power of 90 mW at 83 MHz.
We report efficient and robust Kerr-lens mode-locking of single-mode and tapered diode-pumped Cr:LiSAF lasers by using gain-matched output couplers. Sub-15-fs pulses were generated with peak powers above 60-kW and optical-to-optical conversion efficiencies up to 21%.
A high-efficiency continuous-wave laser-diode-pumped Yb:YAG laser has been realized at room temperature by high intensity pumping. The slope efficiency and optical-to-optical conversion efficiency were 77 % and 72 % for the absorbed pump power, respectively.
We report an efficient, high-energy, diode-pumped Yb:CaF2 regenerative amplifier. Energies up to 1.02 mJ at 1045-nm and 5 kHz-repetition rate in 324 fs-long pulses have been obtained with a beam quality factor of M2 =1.1.
We present a novel feed-forward laser linewidth reduction scheme. The linewidth of a DFB laser is reduced from 9.4MHz to 37.2kHz. Sixteen modes of a mode-locked laser are simultaneously reduced from ∼20MHz to below 300kHz.
We report a tunable pulsed optical parametric oscillator using a double-prism domain PPLN as simultaneously an electro-optic Q-switch and a parametric generator in a Nd:YVO4 laser. >2.3-kW peak-power eye-safe light was obtained with this system.
We propose novel 1.55-µm capsule-shaped metallic-cavity lasers with curved facets to reduce plasmonic losses. Significant reduction of threshold current from 291 µA to 60 µA is demonstrated with effective modal volume of 0.45 µm3.
The two-photon photovoltaic effect is demonstrated in gallium arsenide at 976 and 1550 nm wavelengths. A waveguide photodiode biased in its fourth quadrant is used to harvest electrical power from photons lost to two-photon absorption.
By employing a pair of partially overlapped supersonic gas jets, we made a separation of injection and acceleration stages of laser wakefield acceleration and produced stable, quasi-monoenergetic (10–30% FWHM) and tunable (50–300 MeV) electron beams.
We report a diode-pumped Yb:LYSO laser with a SESAM for mode-locking. Pulse with duration as short as 61 fs was obtained at repetition rate of 113 MHz. The average output power was 40 mW.
We demonstrate a mode-locked Nd3+,Y3+:SrF2 laser for the first time. Pumped with 1.5W continuous Ti:sapphire laser, average output power of 280mW was obtained with pulse duration of 181fs at central wavelength of 1057 nm.
We present a SESAM modelocked diode-pumped Yb:CaGdAlO4 laser with a 1.8-GHz repetition-rate, a 3.5-W average output power and a 60-fs pulse duration, which results in a record high peak power of 28.9 kW.
Modulation characteristics enhancement by mutual injection locking of monolithically integrated lasers is demonstrated. Resonance frequency as high as 34.3 GHz is recorded. The nonlinearity and chirp performances are simultaneously improved compared with free running state.
Kerr-lens mode-locking (KLM) in Yb:CALGO has been demonstrated by means of a high-brightness optical pumping with an Yb:fiber laser. Stable 37 fs pulses are produced with an average power of 1.5 W.
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