"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 12, 2018

contents of issue      DOI  10.30898/1684-1719.2018.12.5     full text in Russian (pdf)  

 Studying the frequency characteristics of THz quantum cascade lasers with using the open optical resonator


V. A. Anfertev 1, V. L. Vaks 1, A. I. Reutov 2, A. N. Baranov 3, R. Teissier 3

1  Institute for Physics of Microstructures of the Russian Academy of Sciences, Nizhny Novgorod, GSP-105, 603950, Russia

2 Lobachevsky University, Nizhny Novgorod 603950, Russia

3 Institute of Electronics and Systems, University of Montpellier, 34090 Montpellier, France


The paper is received on November 26, 2018


Abstract. To date, one of the rapidly developing areas of the THz technology is the development and studying of quantum cascade lasers structures. In this paper, we studied the frequency dynamic characteristics of pulsed THz quantum cascade lasers based on GaAlAs / GaAs materials with design based on the three-well resonant phonon scheme with a surface-plasmon waveguide. We use a Schottky receiver and an open optical resonator. The optimal power mode (pulse length and pulse current) for the single mode laser regime has been determined. With using the open resonator with known characteristics we estimated the laser central frequency (without using a Fourier transform spectrometer) and also determine the speed, direction and magnitude of the tuning in frequency. The experimental setup developed also makes it possible to study the multimode behavior of a laser, in particular, a regime has been obtained where two modes with different mechanisms, velocities and directions of tuning are observed (electronic tuning, thermal tuning). The determination of these important characteristics is necessary to use the laser for development the THz frequency comb source or using the sample for spectroscopy purposes.

Key words: terahertz frequency range, quantum cascade laser, open resonator, frequency sweep.


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For citation:

V. A. Anfertev, V. L. Vaks, A. I. Reutov, A. N. Baranov, R. Teissier. Studying the frequency characteristics of THz quantum cascade lasers with using the open optical resonator. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 12. Available at http://jre.cplire.ru/jre/dec18/5/text.pdf

DOI  10.30898/1684-1719.2018.12.5