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Broadband THz generation is demonstrated using optical rectification in 6 mm GaP waveguides pumped by a high power, high repetition rate, ultrafast Yb-doped fiber amplifier. 150 muW THz radiation is obtained from 10 W pump power.
Power scalable approach for THz generation is demonstrated using optical rectification in GaP pumped by a high power ultrafast Yb-doped fiber amplifier. 1.8 muW THz radiation is obtained from 2.6 W pump power.
Summary form only given. Low-temperature-grown GaAs (LT-GaAs) has long been known to have a (sub)picosecond photo-excited carrier response time. In this paper we report the first direct measurement of the hole trapping time from the valence band in LT-GaAs, and distinguish it from electron trapping time from the conduction band and recombination time. These results are compared with trapping and recombination...
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