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We achieved broadband terahertz radiation with extreme high peak power by femtosecond laser interaction with thin solid foil via particle-in-cell simulations. The angular distribution, temporal profile and spectra of the radiation are studied and reveal that it is coherent transition radiation emitted by hot electrons which are produced in laser plasma interaction and crossing the target surfaces...
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.
By mixing two frequencies generated from a single Q-switched Nd:YLF laser in a GaSe crystal, an average terahertz output power reaches 1 μW within a bandwidth of 65 GHz at 1.64 THz.
We have investigated terahertz (THz) generation from InGaN/GaN multiple quantum wells (QWs). For the laser pump power of 400 mW at 391 nm, the highest THz output power is nearly 1 μW. Assuming that the output power quadratically scales up with the interaction length, such an output power corresponds to a normalized output power of 1.7nW/nm2. The normalized output power measured on the InGaN/GaN multiple...
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.
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