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When adhesive free bonded (AFB) periodically-inverted potassium titanyl phosphate (KTiOPO4, KTP) plates were used as a nonlinear medium inside a cavity, coupled optical parametric oscillators (OPOs) were implemented [1]. As a result, two signal waves and two idler waves can be simultaneously generated. In singly resonant OPOs, two idler waves were used to efficiently generate THz waves [2]. When a...
THz radiation was generated by mixing idler-idler waves from coupled optical parametric oscillators based on stacked KTP plates. Power enhancement, noise reduction, and linewidth narrowing have been attributed to noise reduction between idler waves.
We investigated multiple coupled optical parametric oscillators, exhibiting behaviors of strong coupling. Conversion efficiency and slope efficiency stay the same as those for conventional and two coupled optical parametric oscillators whereas linewidths are significantly reduced.
We have implemented a THz source based on intracavity difference frequency generation in stacked GaP plates as an output coupler of an optical parametric oscillator. The total THz output peak power approaches 200 W.
We have demonstrated that terahertz pulses at 1.65 THz can be generated by mixing dual-frequency pulses emitted from a compact broadband Q-switched Yb:YAG laser.
Efficient terahertz pulses are emitted from stacked GaP plates used as an output coupler for a Q-switched solid-state laser. Such a novel intracavity configuration is exploited to achieve an enhancement of two orders of magnitude.
Based on adhesive-free-bonded periodically inverted KTiOPO4 plates, we implemented a singly-resonant optical parametric oscillator, which has superior advantages of compensating walk-off and oscillating dual-signal wavelengths based on QPM.
After reducing timing jitter between each pair of dual-frequency pulses generated by a passively Q-switched laser by 20 times, we have successfully generated THz pulses based on frequency mixing.
Based on effective third-harmonic generation in two-section dual-period periodically-poled KTP crystal being placed inside the cavity of adhesive-free bond composite Nd:YAG laser, we generated coherent blue light with output power reaching 200 mW.
Based on a novel configuration of a dual-frequency laser system constructed from a Nd:YLF crystal, we have synchronized Q-switched laser pulses at 1047 nm and 1053 nm.
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