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An entangled cavity optical parametric oscillator is applied for photoacoustic spectroscopy in the wavelength range of 3.8-4.3 mum. High resolution spectra of N2O are reported around 3.8 and 4 mum.
We demonstrate 100 GHz continuous tuning and plusmn3 MHz frequency stabilization of the signal radiation delivered by an entangled cavity nanosecond OPO while the frequency fluctuation of the pump radiation is larger than 500 MHz.
We report a continuous-wave, single-longitudinal-mode, singly resonant OPO oscillating at 3.3 mum with 60% pump depletion. We observed optical bistability, thermal guiding, and clamped pump depletion for this OPO.
We present what is believed to be the first Tm:YAG laser pumped ZGP-OPO. Pump energies of 4 mJ and OPO 3-5 mum output energies of 1 mJ were achieved at 100 Hz repetition rate.
An injection-seeded, self-adaptive optical parametric oscillator cavity with a photorefractive phase-conjugate reflector generates tunable nanosecond-pulsed output. Its narrow, single-longitudinal-mode optical bandwidth is verified by high-resolution spectroscopic measurements.
We study the characteristics of a low-loss type-II phase matched synchronously-pumped DRO. Numerical simulations using a split-step Fourier method agree well with experimental results.
We demonstrate widely tunable terahertz-wave generation using difference frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal. The frequency tuning of the BNA-DFG was obtained between 0.1 and 15 THz.
An efficient OP-GaAs OPO pumped by a high repetition rate (20-50 kHz) Q-switched Ho:YAG laser is presented. The slope efficiency is 53% at 20 kHz. Influence of pump polarization on OPO performance is tested.
We have realized palmtop and tunable THz-wave parametric generator and observed output THz-wave with tuning range of 1-3 THz, with power of more than 100 mW (peak), linewidth of less than 10 GHz.
We report non-collinear optical parametric amplification in a bulk KTiOPO4 (KTP) crystal generating ultra-broadband near-IR pulses, that cover simultaneously the wavelength region ~1050-1450 nm with a bandwidth Gt2500 cm-1.
We demonstrated the generation of 34-muJ, 14-fs optical pulses with an ultrabroad bandwidth (540-1000 nm) by the use of one angularly-dispersed non-collinear optical parametric amplifier.
Efficient infrared 35-THz-wide parametric amplification with energies above 3 mJ is obtained in a 3-stage OPCPA using a combination of a 1030-nm 200-fs Yb- and a 1064-nm 60-ps Nd amplifier seeded with a common Yb oscillator.
We show that gain in an OPO with a large walkoff between the pump and signal saturates just like a laser gain and thus CW pumped OPO can be directly mode-locked with high conversion efficiency.
The first demonstration of self-established noncollinear operation in the idler-counter-propagating mirrorless optical parametric oscillator is presented using periodically poled KTiOPO4 having 800 nm period. The noncollinear geometry is employed for enhanced output wavelength tuning.
Comparison of the performance of an optical parametric amplifier is presented using BBO or BIBO crystals in Type II. The spatio-temporal effect of the parametric pulse-shortening is experimentally investigated with respect to the signal wavelength.
We report the first high-contrast, high-intense Ti:sapphire chirped-pulse amplification laser system incorporating a nonlinear pre-amplifier based on an optical parametric chirped-pulse amplification for use in experiments where relativistic effects dominate the physics.
We propose to use Bragg grating to induce large walk-off between the signal and slow pump in nonlinear crystal for developing passively mode-locked OPOpsilas in which a CW pump is efficiently converted into short pulses.
A chirp-controlled nanosecond-pulsed tunable optical parametric oscillator and two-stage Ti:sapphire amplifier generate high-power coherent light at ~840 nm, with frequency stability and narrow optical bandwidth as needed for high-resolution ultraviolet spectroscopy.
Ultrabroadband generation of white-light continuum in the near-IR (~135 THz, 1.15-2.4 mum) is demonstrated in BiB3O6, pumped by 45 fs long pulses at 800 nm, achieving an energy of 15 muJ at 1 kHz.
We experimentally demonstrate a quantum nondemolition (QND) interaction, based upon offline-prepared, squeezed ancilla states and homodyne measurements with feedforward. The resulting QND gate is verified via the criteria for QND measurements of each conjugate quadrature.
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