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Single-laser polarization-controlled optical sampling system for THz-TDS

 
: Kolano, Michael; Boidol, Oliver; Weber, Stefan; Molter, Daniel; Freymann, Georg von

:

Institute of Electrical and Electronics Engineers -IEEE-:
IRMMW-THz 2018, 43rd International Conference on Infrared, Millimeter, and Terahertz Waves : 9-14 September 2018, Nagoya Congress Center, Nagoya, Japan
Piscataway, NJ: IEEE, 2018
ISBN: 978-1-5386-3809-5
ISBN: 978-1-5386-3808-8
ISBN: 978-1-5386-3810-1
3 S.
International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) <43, 2018, Nagoya>
Englisch
Konferenzbeitrag
Fraunhofer ITWM ()

Abstract
We demonstrate a polarization-multiplexed, single-laser system for terahertz (THz) time-domain spectroscopy without an external delay line. The fiber laser emits two pulse trains with independently adjustable repetition rates, utilizing only one laser-active section and one pump diode. With a standard fiber-coupled THz setup and an optical amplifier stage, we are able to measure transients with a spectral bandwidth of 2.5 THz and a dynamic range of 50 dB in a measurement time of 1s with a timing accuracy of the THz pulse of approximately 50 fs. Based on the novel laser architecture, we call this new approach single-laser polarization-controlled optical sampling, or SLAPCOPS.

: http://publica.fraunhofer.de/dokumente/N-531324.html