An eye-safe, SBS-free coherent fiber laser LIDAR transmitter with Millijoule energy and high average power

Mehmetcan Akbulut, Leonid Kotov, Kort Wiersma, Jie Zong, Maohe Li, Andy Miller, Arturo Chavez-Pirson, Nasser Peyghambarian

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We report on an eye-safe, transform-limited, millijoule energy, and high average power fiber laser. The high gain and short length of the NP phosphate-glass fibers enable the SBS-free operation with kW level peak power. The output energy is up to 1.3 mJ, and the average power is up to 23 W at an 18 kHz repetition rate with 600 ns pulses (peak power > 2.1 kW). The PER is ≈16 dB and the M2 of the beam is 1.33 × 1.18. The coherent LIDAR Figure Of Merit (FOM) is 174 mJ*sqrt(Hz), which to our knowledge is the highest reported for a fiber laser. We also report 0.75 mJ energy and >3.7 kW peak power with down to 200 ns pulses and up to 1.21 mJ energy with a 3-5 kHz repetition rate operation of the current system.

Original languageEnglish (US)
Article number15
Pages (from-to)1-7
Number of pages7
JournalPhotonics
Volume8
Issue number1
DOIs
StatePublished - Jan 2021
Externally publishedYes

Keywords

  • Coherent LIDAR
  • Eye-safe pulsed fiber laser
  • Fiber laser
  • High energy fiber laser
  • SBS-free fiber laser

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Radiology Nuclear Medicine and imaging

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