Efficient spectral shift and compression of femtosecond pulses by parametric amplification of chirped light

Opt Express. 2012 Jan 30;20(3):2136-42. doi: 10.1364/OE.20.002136.

Abstract

We present a method for an efficient spectral shift and compression of pulses from a femtosecond laser system. The method enables generation of broadly tunable (615-985 nm) narrow bandwidth (≈10 cm(-1)) pulses from the femtosecond pulses at 1030 nm. It employs a direct parametric amplification--without spectral filtering--of highly chirped white light by a narrow bandwidth (<5 cm(-1)) 515 nm pump pulse. The system, when pumped with just 200 μJ of the fundamental femtosecond pulse energy, generates pulses with energies of 3-9 μJ and an excellent beam quality in the entire tuning range.

MeSH terms

  • Amplifiers, Electronic*
  • Data Compression / methods*
  • Equipment Design
  • Equipment Failure Analysis
  • Lasers*
  • Signal Processing, Computer-Assisted / instrumentation*