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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.
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 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 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.
Single pass gain of 77mm crystal and ceramic Yb:YAG disks are compared in the 100–200K temperature range. Experiments are performed on a laser amplifier cooled through a static low pressure helium gas cell.
We demonstrate time- and space-resolved luminescence measurements of quantum degenerate paraexcitons in cuprous oxide. We report dynamics of ultracold excitons such as the drift in a trap potential, cooling process, and lifetime of exctions.
Using near-infrared pump probe technique, we demonstrate ultrafast photoinduced absorption with a decay constant as short as 100 fs in a large single crystal of bismuth ferrite with high quality grown by floating zone method.
We report on linear and nonlinear infrared and plasmonic properties of chalcogenide crystal of the Bi-Sb-Te-Se family that was recently identified as a prospective platform for switchable broadband plasmonic devices.
We report the use of [100]-cut YAG/Nd:YAG composite in a microchip laser to reduce depolarization at high average power. Consequently, we achieve FHG giving > 0.5 MW peak power, 1 kHz at 266 nm.
New PPMgLN arrangement fabricated from X-axis Czochralski-grown crystal was proposed to improve a laser-beam distortion problem after passing the PPMgLN device. Availability of periodic poling in the new arrangement could be confirmed in 5-mm-thick MgLN.
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.
Generation of sub 100 fs pulse has been obtained in an Yb:CALGO regenerative amplifier using nonlinear effects. It exhibits 97fs pulses at 1047nm with up to 24µJ energy with a spectral bandwidth of 19nm.
Difference-frequency generation between signal and idler of Yb-fiber laser synchronously-pumped femtosecond / picosecond OPOs at 53/80 MHz provides maximum single pulse energies exceeding 1 nJ and continuous tuning from 5 µm to 12 µm.
More than 2 Watts of continuous-wave external power at 3400 nm was obtained by difference frequency mixing of 1064.6 nm and 1549.8 nm fiber lasers in a periodically poled lithium niobate crystal at 50 °C.
Mid-infrared (3–5 µm) pulses with up to 207 mJ energy at 1 Hz repetition rate are produced using nonlinear conversion in a ZnGeP2-based master oscillator-power amplifier, pumped by a cryogenic Ho:YLF oscillator.
Glass-clad Cr4+:YSO crystal fibers were grown using the laser-heated pedestal growth method. Quasi-3-level behavior of the Cr4+:YSO was observed, and the emission was red shifted to 1302 nm with a 3-dB bandwidth of 230 nm.
An optomechanical crystal nanobeam cavity with high optomechanical coupling rate is proposed and fabricated. Only by adjusting the radius of the air holes, the cavity realizes an optomechanical coupling rate as high as 1.24 MHz.
High power operation of a continuous-wave Alexandrite laser is reported. Output power of 2.6 W at 755 nm and tunability of 85 nm were achieved using 11 W of pump at 532 nm.
The THz range permittivity of succinonitrile exhibits Debye-like behavior in its plastic-crystal phase, with a characteristic Cole-Cole relaxation time of 65ps ±17ps which increases considerably in the presence of ionic dopants.
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