2012年11月
Terahertz generation by optical rectification in lithium niobate crystal using a shadow mask
OPTICS EXPRESS
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- 巻
- 20
- 号
- 23
- 開始ページ
- 25752
- 終了ページ
- 25757
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OE.20.025752
- 出版者・発行元
- OPTICAL SOC AMER
A simple approach to generate high energy, frequency and bandwidth tunable multicycle THz pulses by optical rectification (OR) of spatially shaped femtosecond laser pulses in the lithium niobate (LN) crystal is proposed and demonstrated. A one dimensional binary shadow mask is used as a laser beam shaper. By building the mask's image in the bulk LN crystal with various demagnifications, the frequency of THz generation was tuned in the range of 0.3 - 1.2 THz. There exist also an opportunity to tune the bandwidth of THz generation from 20 GHz to approximately 1 THz by changing the optical beam size on the crystal. The energy spectral density of narrowband THz generation is almost independent of the bandwidth and is typically 0.18 mu J/THz for similar to 1 W pump power at 1 kHz repetition rate. (C) 2012 Optical Society of America
- リンク情報
- ID情報
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- DOI : 10.1364/OE.20.025752
- ISSN : 1094-4087
- Web of Science ID : WOS:000311340300084