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Continuously tunable mid-infrared OPO with output energy of several mJ around 3 µm range could be realized by angular tuning of large-aperture PPMgLN device with tilted QPM structures.
We generate optical beams with rotating intensity blades, namely “optical propellers”, by employing Moiré technique. Such rotating beams are controlled by SLM without mechanical movement or phase-sensitive interference. Self-trapping of propelling beams is also demonstrated.
Using a generalized version of double optical gating, we produced single isolated attosecond pulses with 2 mJ, 25 fs driving lasers. Through attosecond streaking, we characterized isolated 160 attosecond pulses with 170 pJ pulse energy.
A minimal-chirp nanosecond-pulsed nonlinear-optical system generates tunable coherent ultraviolet light at ∼212.5 nm. Its frequency stability and optical bandwidth are verified by means of novel sub-Doppler coherent heterodyne-assisted two-photon spectroscopy of krypton.
Harmonics up to the 15th order are produced from solid targets using 3 mJ, 30 fs pulses focused to a spot size of 1.7 μm and 3 × 1018 W/cm2. Combined conversion efficiency to the highest harmonics is > 10-5.
We report on the temporal and spectral dynamics of the nonlinear optical response of transparent Ag/Au multi-metal layers and Fabry-Perot resonators with 10× enhancement compared with Ag and with comparable transparency in the visible.
We demonstrated a novel method of simultaneous spectral broadening and amplification of a laser pulse in a glass plate. A proof-of-principle experiment improved both the spectrum and the energy by a factor of about three.
We report the experimental characterization of the gain recovery of a columnar-quantum-dot SOA (CQD-SOA) at 1550 nm. We find a three-step recovery process that allows 85% gain recovery in 10 ps and 100% in 30 ps.
We experimentally demonstrate simultaneous two-channel wavelength conversion of 40-Gbit/s RZ-DPSK WDM signals using four-wave mixing (FWM) in a highly nonlinear fiber (HNLF) without additional pumps. A power penalty of <1 dB is observed as channel spacing varies from 200 GHz to 1 THz.
We present an analytical model to calculate the signal to noise ratio of a slow light based microwave phase shifter that uses semiconductor optical amplifiers. The model includes dynamic noise effects and is confirmed experimentally.
We investigate 8-level all-optical quantization by broadening the pulse spectrum in a chalcogenide (As2S3) waveguide, for 8 different power levels, and subsequently slicing the measured spectrum using an array of filters.
Two-photon counting distributions of different optical sources are experimentally studied using third-order optical nonlinearity in a GaAs detector. Semiclassical as well as quantum theories are presented in order to explain our results.
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