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Terahertz time-domain-spectroscopy system based on femtosecond Yb:fiber laser and GaBiAs photoconducting components
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10.1063/1.3458826
/content/aip/journal/apl/97/3/10.1063/1.3458826
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/3/10.1063/1.3458826
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The Fourier spectrum of the THz radiation transients generated and detected by 70 fs, 1030 nm laser pulses in the photoconductive components made from the GaBiAs layer. Inset - THz pulse waveform.

Image of FIG. 2.
FIG. 2.

Average THz output power dependence on the bias voltage at different optical pump powers (a) and on the optical pump power at the bias voltage of 65 V (b).

Image of FIG. 3.
FIG. 3.

THz transients (a) and corresponding Fourier spectra (b) for three different laser pulse durations (indicated in the panels). Beams with average powers of 8 and 11 mW were used for the photoexcitation of the THz emitter and the detector, respectively.

Image of FIG. 4.
FIG. 4.

20 dB bandwidth of THz-TDS system as a function of the optical pulse duration. Solid lines - calculations in the case of different carrier lifetimes (indicated in the figure) in the detector. Full points - experimental results obtained with the Yb:fiber laser. A hollow circle - experimental result obtained with the Yb:KGW laser.

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/content/aip/journal/apl/97/3/10.1063/1.3458826
2010-07-20
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Terahertz time-domain-spectroscopy system based on femtosecond Yb:fiber laser and GaBiAs photoconducting components
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/3/10.1063/1.3458826
10.1063/1.3458826
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