Sub-mW, short-pulse THz-radiation from femtosecond-laser irradiated InAs and its polarization and spatial properties

Zhenlin LIU; Hideyuki OHTAKE; Shinji IZUMIDA; Shingo ONO; Nobuhiko SARUKURA

doi:10.1364/ASSL.1998.TS11

Advanced Solid State Lasers
OSA Trends in Optics and Photonics Series (Optica Publishing Group, 1998),
paper TS11
•https://doi.org/10.1364/ASSL.1998.TS11

Sub-mW, short-pulse THz-radiation from femtosecond-laser irradiated InAs and its polarization and spatial properties

Zhenlin LIU, Hideyuki OHTAKE, Shinji IZUMIDA, Shingo ONO, and Nobuhiko SARUKURA

Advanced Solid State Lasers 1998

Coeur d'Alene, Idaho United States
ISBN: 1-55752-523-4

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Ultrafast Laser and THz Sources (TS)

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Z. LIU, H. OHTAKE, S. IZUMIDA, S. ONO, and N. SARUKURA, "Sub-mW, short-pulse THz-radiation from femtosecond-laser irradiated InAs and its polarization and spatial properties," in Advanced Solid State Lasers, W. Bosenberg and M. Fejer, eds., Vol. 19 of OSA Trends in Optics and Photonics Series (Optica Publishing Group, 1998), paper TS11.

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Abstract

The THz-radiation power from bulk InAs irradiated with femtosecond optical pulses is significantly enhanced and reaches 650 μW in a 1.7-T magnetic field with 1.5-W excitation power. The THz-radiation power is related almost quadratically both to the magnetic field and excitation laser power. We have also found that the power of the THz-radiation from an InAs sample in a magnetic field is over one order of magnitude higher than that from GaAs. Additionally, a dramatic change of ellipticity is observed, and the spectra of the horizontal and vertical polarization components are found to differ.

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