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We report terahertz-wave generation in the wavelength range of 190~210 and 457~507 mum from forward and backward difference frequency generations, respectively, in a 3.2-cm long multi-grating periodically poled lithium niobate (PPLN) crystal.
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 demonstrate difference frequency generation of backward THz waves from collinearly phase-matched, periodically poled lithium niobate. Coherent THz waves between 457~507 mum were generated by using kW pump power at a kHz repetition rate.
We demonstrate the PPLN crystal as a laser Q-switch by using electro-optic Bragg modulator effect and generate 200-muJ/pulse with 10 kHz switching rate at 19-W diode pump power.
We report difference frequency generation of THz waves from collinearly phase-matched, periodically poled lithium niobate crystals. Transform-limited THz-wave pulses with a wavelength range between 190~210 mum were generated at a kHz repetition rate.
We report the first experimental demonstration of active narrowband multiple wavelength filters in aperiodically poled lithium niobate (APLN) crystals. Simultaneous transmission of >90% (~100% in design) of 8 telecom wavelengths was achieved in this device.
We report the first experimentally demonstrated active Sole-type optical wavelength filters based on Ti:PPLN waveguides. A peak spectral transmittance of ~99% at a bandwidth of ~2.6 nm in telecom bands was obtained in this device.
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