Title :
Pump and probe experimental setup with optoelectronically pulsed antenna for giga/terahertz spectroscopy
Author :
Eloy, Jean-François ; Gerbe, Vincent ; Trombert, Jean-Hugues ; Wilhelmsson, Hans
Author_Institution :
CEA/CESTA, Le Barp, France
fDate :
4/1/1998 12:00:00 AM
Abstract :
A detailed description of a picosecond pump-probe optoelectronic pulsing (generating electromagnetic transients in free space) and sampling system is presented. This system will be used for spectroscopy in a [10-100]-GHz range of materials such as semiconductors. The signal-to-noise ratio obtained in this system is greater than 40 dB and the time resolution can be less than 500 fs, thereby permitting studies of very fast, low-amplitude transient phenomena. For microdevices separated by 5 cm an E peak field amplitude of 80 V/m is detected
Keywords :
microwave antennas; microwave measurement; microwave spectroscopy; millimetre wave antennas; millimetre wave measurement; millimetre wave spectroscopy; signal resolution; signal sampling; transients; 10 to 100 GHz; 500 fs; electromagnetic transients; gigahertz spectroscopy; low-amplitude transient phenomena; optoelectronic sampling system; optoelectronically pulsed antenna; peak field amplitude; picosecond pump-probe; signal-to-noise ratio; terahertz spectroscopy; time resolution; Dielectric measurements; Electromagnetic transients; Optical pulse generation; Optical pulses; Photoconductivity; Probes; Pulse measurements; Sampling methods; Semiconductor lasers; Spectroscopy;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
