Generation of arbitrarily chirped and CEP-controlled terahertz pulses for dispersion compensation using an optical pulse shaping technique and a fan-out periodically poled crystal
| Autor: | Takahashi Koji, Koyo Watanabe, Hiroshi Satozono, Yoichi Kawada, Takashi Inoue, Hisanari Takahashi, Hironori Takahashi |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Spatial light modulator Terahertz radiation business.industry Phase (waves) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Pulse shaping Atomic and Molecular Physics and Optics 010309 optics Crystal chemistry.chemical_compound Optics chemistry 0103 physical sciences Lithium tantalate Chirp Phase velocity 0210 nano-technology business |
| Zdroj: | Optics express. 27(18) |
| ISSN: | 1094-4087 |
| Popis: | We constructed a system that can generate phase-controlled terahertz (THz) pulses using a fan-out periodically poled lithium tantalate crystal and an optical pulse shaper containing a spatial light modulator. The phase of each THz frequency components could be controlled by manipulating the delay time of the corresponding optical pulses. Using the system, we generated arbitrarily group-velocity-dispersion-controlled THz pulses, where the chirp parameter was 2.53 ps2/rad between 0.6 and 1.5 THz. In addition, we generated arbitrarily carrier-envelope-phase-controlled THz pulses in the same system. Phase-controlled THz pulses may be useful for applications such as dispersion compensation. |
| Databáze: | OpenAIRE |
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