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.
References
1.
Mukhin A.A., Ivanov V.Yu., Travkin V.D., Prokhorov A.S.,
Volkov A.A., Pimenov A.V., Shuvaev A.M., Loidl A., Terahertz spectroscopy and
the magnetoelectric properties of manganite-based multiferroics. Physics–Uspekhi, 2009, Vol. 52, No. 8, pp.
851–856.
2.
Vaks V.L.,
Domracheva E.G., Sobakinskaya E.A., Chernyaeva M.B. Exhaled breath analysis: physical
methods, instruments, and medical diagnostics. Physics–Uspekhi, 2014,
Vol. 57, No. 7, pp. 684-701.
3.
Köhler
R., Tredicucci A., Beltram F. et al. Terahertz semiconductor-heterostructure
laser. Nature, 2002, Vol. 417, Issue 2, p. 156.
4. Kumar S., Hu Q., Reno J.L.
186 K operation of terahertz quantum-cascade lasers based on a diagonal design.
Appl. Phys. Lett. 2009, Vol. 94, p. 131105.
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