High-resolution spectral analysis of long single-frequency pulses generated by a self-sweeping Yb-doped fiber laser

R. V. Drobyshev, N. R. Poddubrovskii, I. A. Lobach, S. I. Kablukov

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

Continuous wave self-sweeping operation is demonstrated in a classical ring cavity configuration of Yb-doped fiber laser with a saturable absorber, which is usually used to obtain single-frequency lasing. Using heterodyne-based high-resolution spectral analysis we demonstrate that the laser generates a series of long (up to 1 ms) rectangular pulses consisting of single frequency radiation (the linewidth <0.7 MHz). At the same time, the lasing frequency changes between pulses regularly in a stepwise manner by one intermode beating frequency within a self-sweeping range of 100 pm. The effect of cavity configuration on pulse parameters (duration and chirp) is investigated. We also demonstrate that saturable absorbing mirrors design can be used to control the self-sweeping direction and value of the frequency jump.

Язык оригиналаанглийский
Номер статьи085102
ЖурналLaser Physics Letters
Том18
Номер выпуска8
DOI
СостояниеОпубликовано - авг 2021

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ
  • 1.03.SY ОПТИКА

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