High-Power all-fiber-based narrow-linewidth single-mode fiber laser pulses in the C-band and frequency conversion to THz generation

Wei Shi, Matthew A. Leigh, Jie Zong, Zhidong Yao, Dan T. Nguyen, Arturo Chavez-Pirson, Nasser Peyghambarian

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Based on highly Er/Yb codoped phosphate fibers, we have implemented all-fiber-based narrow-linewidth single-mode (SM) pulsed fiber lasers in master oscillator and power amplifier configuration. Two approaches were used to achieve the narrow-linewidth pulsed fiber laser seeds: 1) an all-fiber-based active $Q$-switched fiber laser using an actuator and 2) a directly modulated single-frequency continuous-wave fiber laser. Both the fiber laser seed pulses from the two approaches have the transform-limited spectral linewidth. Based on a newly developed large-core SM highly Er/Yb codoped phosphate fiber, the peak power of SM pulses can be scaled to more than 50 kW with transform-limited linewidth and diffraction-limited beam quality. These high-power narrow-linewidth SM fiber laser pulses have been successfully used to generate coherent terahertz (THz) waves based on parametric processes in a nonlinear optical crystal. The peak power of this fiber-based THz source can reach 26.4 mW.

Original languageEnglish (US)
Article number4811120
Pages (from-to)377-384
Number of pages8
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume15
Issue number2
DOIs
StatePublished - Mar 1 2009

Keywords

  • Fiber optics amplifiers and oscillators
  • Frequency conversion
  • Infrared and far-infrared lasers
  • Lasers and laser optics
  • Nonlinear optics
  • Terahertz (THz) generation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Atomic and Molecular Physics, and Optics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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