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Effect of Linewidth Enhancement Factor on Doppler Beat Waveform Obtained from a Self-Mixing Laser Diode

  • OPTICAL SYSTEMS AND TECHNOLOGIES
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Abstract

The asymmetry and fringe inclination of the sawtooth-like waveform observed in the self-mixing signal obtained from a semiconductor laser with optical feedback enable the direction discrimination of line-of-sight motion of external target surfaces. We investigated the effects of linewidth enhancement factor and feedback strength on the asymmetry and the direction of fringe inclination of the signal by numerical simulations. For the first time, we show that direction of the fringe inclination is determined not only by the direction of the target motion but also by the value of the linewidth enhancement factor.

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Authors and Affiliations

  1. Faculty of Engineering, Shizuoka University, 3-5-1, Johoku, Hamamatsu, 432-8561, Japan

    Sahin Kaya ÖZDEMIR, Shigenobu SHINOHARA1 & Hirofumi Yoshida

  2. CREST Research Team for Interacting Carrier Electronics, School of Advanced Sciences, The Graduate University for Advanced Studies (SOKEN), Hayama, Kanagawa, 240-0193, Japan

    Sahin Kaya ÖZDEMIR

Authors
  1. Sahin Kaya ÖZDEMIR
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  2. Shigenobu SHINOHARA1
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  3. Hirofumi Yoshida
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Correspondence to Sahin Kaya ÖZDEMIR.

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Kaya ÖZDEMIR, S., SHINOHARA1, S. & Yoshida, H. Effect of Linewidth Enhancement Factor on Doppler Beat Waveform Obtained from a Self-Mixing Laser Diode. OPT REV 7, 550–554 (2000). https://doi.org/10.1007/s10043-000-0550-7

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  • DOI: https://doi.org/10.1007/s10043-000-0550-7

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