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Kvantovaya Elektronika, 2020, Volume 50, Number 2, Pages 136–140 (Mi qe17198)  

This article is cited in 6 scientific papers (total in 6 papers)

Lasers

Tunable semiconductor laser with two acousto-optic tunable filters in its external cavity

L. N. Magdicha, A. Yu. Chamorovskiyb, V. R. Shidlovskiĭc, M. V. Shramenkoc, S. D. Yakubovichd

a Polyus Research and Development Institute named after M. F. Stel'makh, Moscow
b Superlum Diodes Ltd, Ireland
c "Opton" LLC, Moscow
d MIREA — Russian Technological University, Moscow
References:
Abstract: We report a laser with a linear external cavity containing a near-IR injection semiconductor optical amplifier as a gain element and two acousto-optic tunable filters (AOTFs) with quasicollinear interaction of acoustic and light waves. At identical frequencies of RF signals that control the filters and ensure compensation for the Doppler frequency shift of light passing through the AOTFs, the steady-state laser emission linewidth can be reduced to about 25 MHz, which is almost three orders of magnitude smaller than that in the case of one filter (20 GHz). The position of the emission line, which remains narrow, slowly fluctuates within a spectral range about 3 GHz wide, which seems to be due to the large length of the external cavity and insufficient thermal stabilization of its components. This does not prevent us from obtaining light with a large coherence length. In emission wavelength sweep mode, the instantaneous emission linewidth increases with tuning rate, reaching 0.022 nm (8.8 GHz) at the highest tuning rate: 104 nm s-1. In the case of automatic control over the output optical power at a level of 3 mW, the tuning range is 815–875 nm. Such instruments are of practical interest for optical coherence tomography, spectroscopy, optical metrology, and other application areas.
Keywords: tunable laser, semiconductor optical amplifier, acoustooptic filter, optical coherence tomography.
Received: 05.11.2019
Revised: 20.12.2019
English version:
Quantum Electronics, 2020, Volume 50, Issue 2, Pages 136–140
DOI: https://doi.org/10.1070/QEL17180
Bibliographic databases:
Document Type: Article
Language: Russian


Citation: L. N. Magdich, A. Yu. Chamorovskiy, V. R. Shidlovskiĭ, M. V. Shramenko, S. D. Yakubovich, “Tunable semiconductor laser with two acousto-optic tunable filters in its external cavity”, Kvantovaya Elektronika, 50:2 (2020), 136–140 [Quantum Electron., 50:2 (2020), 136–140]
Linking options:
  • https://www.mathnet.ru/eng/qe17198
  • https://www.mathnet.ru/eng/qe/v50/i2/p136
  • This publication is cited in the following 6 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Квантовая электроника Quantum Electronics
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    References:25
    First page:6
     
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