Generation and detection of broadband coherent terahertz radiation using 17-fs ultrashort pulse fiber laser
2008; Optica Publishing Group; Volume: 16; Issue: 17 Linguagem: Inglês
10.1364/oe.16.012859
ISSN1094-4087
AutoresJun Takayanagi, So Kanamori, Koji Suizu, Masatsugu Yamashita, Toshihiko Ouchi, S. Kasai, Hideyuki Ohtake, Hiromasa Uchida, Norihiko Nishizawa, Kodo Kawase,
Tópico(s)Photonic and Optical Devices
ResumoWe describe the generation and detection of broadband terahertz radiation using an all-fiber laser. Optical pulses from a mode-locked fiber laser oscillator are compressed using nonlinear and dispersion effects induced in optical fibers, and 17-fs optical pulses with 170-kW peak power are generated at the wavelength region around 1.5 microm. By injecting these pulses into an organic crystal DAST (4-N, N-dimethylamino-4'-N"-methyl-stilbazolium tosylate), broadband terahertz field is radiated at 0.1-25 THz. The frequency region exceeding 20 THz is achieved with a fiber laser for the first time.
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