Title :
Mid-infrared THz pulse
Author :
Han, P.Y. ; Zhang, X.-C.
Author_Institution :
Dept. of Phys., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
Recently, generation of broadband mid-IR radiation through optical rectification has been demonstrated. Free-space electro-optic sampling, as a coherent detection technique, on the other hand, can provide ultrafast response from DC to mid-IR. In the presentation, we demonstrate the coherent detection of mid-infrared THz pulses (as short as 30 fs) with a spectrum from near DC to 40 THz. We also present the results from different sensor materials. The optical beam from a 12 fs Ti:sapphire laser is divided into two: one is incident upon an electro-optic crystal as a pump beam, another is used as the probe beam
Keywords :
electro-optical effects; infrared spectroscopy; laser beams; laser variables measurement; optical pulse generation; rectification; sapphire; solid lasers; titanium; 12 fs; 30 fs; 40 THz; Al2O2:Ti; Ti:sapphire laser; broadband mid-IR radiation; coherent detection; coherent detection technique; electro-optic crystal; free-space electro-optic sampling; mid-IR region; mid-infrared THz pulse; mid-infrared THz pulses; optical beam; optical rectification; probe beam; pump beam; sensor materials; ultrafast response; Crystalline materials; Laser beams; Laser excitation; Nonlinear optics; Optical beams; Optical pulses; Optical pumping; Optical sensors; Sampling methods; Ultrafast optics;
Conference_Titel :
Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting
Conference_Location :
Kauai, HI
Print_ISBN :
0-7803-4950-4
DOI :
10.1109/NLO.1998.710327
