High-peak-power eye-safe orthogonally-polarized dual-wavelength Nd:YLF/KGW Raman laser.

An actively Q-switched eye-safe orthogonally-polarized dual-wavelength intracavity Raman laser was demonstrated for the first time, to the best of our knowledge. The gain balanced dual-wavelength operation at 1314 and 1321 nm within an in-band pumped Nd:YLF laser was realized by slightly titling the cavity mirrors. Owing to the KGW bi-axial properties, two sets of simultaneous orthogonally-polarized dual-wavelength Raman lasers at 1470, 1490 nm and 1461, 1499 nm were achieved by simply rotating the KGW crystal for 90°, respectively.

Efficient high-power orthogonally-polarized dual-wavelength Nd:YLF laser at 1314 and 1321 nm.

We demonstrate an 806 nm laser diode end-pumped continuous-wave (CW) and actively Q-switched (AQS) orthogonally-polarized dual-wavelength Nd:YLF laser operating at 1314 and 1321 nm. Benefitting from the small difference of the stimulated emission cross sections at 1314 and 1321 nm in Nd:YLF crystal, the power equalized emissions at both wavelengths were achieved by simply titling the output coupler. A maximum CW output power of 9.

Cr: CdSe passively Q-switched Ho: YAG laser.

We first demonstrate the laser performance of a Cr:CdSe passively Q-switched (PQS) 2.09 μm Ho: YAG laser resonantly pumped by a thulium-doped fiber laser. The maximum output pulse energy of 1.

100 μJ pulse energy in burst-mode-operated hybrid fiber-bulk amplifier system with envelope shaping.

A theoretical method was proposed to compensate the burst envelope distortion in a solid-state master-oscillator power-amplifier (MOPA) system operating in burst mode at an intra-burst repetition rate of 40 MHz. Arbitrary envelope shapes were achieved at inter-burst repetition rate of 100 kHz with 40 pulses in the burst, showing excellent agreement with the calculated ones. This is the first demonstration of arbitrary burst envelope without an adaptive feedback loop in a solid-state laser system.

High peak power hybrid MOPA laser with tunable pulse repetition frequency and pulse duration.

In this paper, we demonstrated a hybrid master oscillator power amplifier (MOPA) laser with high peak power and widely tunable pulse repetition frequency (PRF) and pulse duration. The first-stage solid-state amplifier was carefully designed to keep good beam quality and supply high gain simultaneously. The maximum peak power of 760 kW was achieved with average power of 42 W, PRF of 50 kHz, pulse duration of 1.

Active pulse shaping for end-pumped Nd:YVO amplifier with high gain.

We demonstrated the active shaping for a solid-state Nd:YVO amplifier with a high average gain of 39.2 dB. The average output power was 8.

Gain change by adjusting the pumping wavelength in an end-pumped Nd:YVO amplifier.

In this paper, the performance of an end-pumped laser amplifier was experimentally studied by adjusting the pumping wavelength of a laser diode. An interesting phenomenon was observed: that the gain would decrease with an increase in absorbed pump power. The scaled output power of 0.

Theoretical and experimental analysis of high-power frequency-stabilized semiconductor master oscillator power-amplifier system.

We present a compact high-power 780 nm frequency-stabilized diode laser with a power of as high as 2.825 W, corresponding to an estimated overall efficiency of 38.5%.

High-slope-efficiency 2.06 μm Ho: YLF laser in-band pumped by a fiber-coupled broadband diode.

We first demonstrate the laser performance of a compact 2.06 μm Ho: YLF laser resonantly pumped by a broadband fiber-coupled diode. In continuous-wave (CW) operation, maximum output power of 1.

End-pumped temperature-dependent passively Q-switched lasers.

In this paper, we compare pulse parameters in two end-pumped passively Q-switched lasers by increasing the boundary temperature of the laser crystal. For the Nd:YAG/Cr:YAG laser, the pulse energy at 1 kHz increased from 12.4 to 21 μJ when the boundary temperature increased from 20°C to 120°C, while the pulse width decreased by 1.

4.0 μm, high repetition rate periodically poled magnesium-oxide-doped lithium niobate mid-infrared optical parametric oscillator pumped by steep leading edge pulsed fiber laser.

A high repetition rate optical parametric oscillator (OPO) generating an idler laser with a wavelength as long as 4.0 μm at 200 and 400 kHz was demonstrated in this paper. The OPO was pumped by a master oscillator power amplifier structure fiber laser with excellent characteristics.