Terahertz pulse generation from Te-doped GaSe crystals
碩士 === 國立交通大學 === 電子物理系所 === 99 === In this thesis, we demonstrate the generation of central wavelength-tunable (Δλc > 84.8 nm ) and high-output power (>1.36 µW) terahertz radiation on Te-doped GaSe crystals by using femtosecond laser pulses. The dopant, Te atoms, in GaSe crystals significantl...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/54878535442223791551 |
| Summary: | 碩士 === 國立交通大學 === 電子物理系所 === 99 === In this thesis, we demonstrate the generation of central wavelength-tunable (Δλc > 84.8 nm ) and high-output power (>1.36 µW) terahertz radiation on Te-doped GaSe crystals by using femtosecond laser pulses. The dopant, Te atoms, in GaSe crystals significantly enhances the efficiency of THz generation. The wide-range linearity between the optical pumping power and THz radiation power on Te-doped crystals promises them to be the potential materials for high-power THz applications via optical rectification method. Furthermore, we also measured the optical properties of Te-doped GaSe crystals in the range from visible to far-IR. For the range of far-IR, the index of reflection and absorption coefficient of Te-doped GaSe crystals can be directly obtained by terahertz time-domain spectroscopy.
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