非表示:
キーワード:
OCIS codes: 320.7110 - Ultrafast nonlinear optics; 300.6495 - Terahertz spectroscopy; 320.7150 - Ultrafast spectroscopy;
320.5520 - Pulse compression
要旨:
We demonstrate ultrafast THz saturable absorption in n-doped semiconductors by nonlinear THz time-domain spectroscopy. This effect is caused by the semiconductor conductivity modulation due to electron heating and satellite-valley scattering in strong THz fields.