Abstract

We report on theoretical and experimental study of pulsed lasing driven by synchronous pumping of an Yb-fiber laser. We show that even simple sine-wave modulation of the pump power with moderate depth (~50%) can result in shaping of a regular train of discrete laser pulses. Moreover, generated pulses are typically much shorter than pumping pulses. The pulse shortening factor rises with the modulation depth of pumping. It reached 5 in our setup. Thus, ~200-ns laser pulses were generated with sub-MHz sine-wave modulation of the pump power. Theoretical modelling predicts possibility of further pulse shortening (up to a factor of 11) by increasing maximal pump power and modulation index. Such shortening can be attributed to self-induced gain discrimination of the temporal pulse profile.

Original languageEnglish
Title of host publicationProceedings - International Conference Laser Optics 2020, ICLO 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728152332
DOIs
Publication statusPublished - 2 Nov 2020
Event2020 International Conference Laser Optics, ICLO 2020 - St. Petersburg, Russian Federation
Duration: 2 Nov 20206 Nov 2020

Publication series

NameProceedings - International Conference Laser Optics 2020, ICLO 2020

Conference

Conference2020 International Conference Laser Optics, ICLO 2020
CountryRussian Federation
CitySt. Petersburg
Period02.11.202006.11.2020

Keywords

  • fiber laser
  • pulse shaping
  • synchronous pumping

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