Evaluation of femtosecond pulse shaping with low-loss phase-only masks

Kazuya Takasago, Makoto Takekawa, Masayuki Suzuki, Kazuhiro Komori, Fumihiko Kannari

Research output: Contribution to journalReview article

27 Citations (Scopus)

Abstract

We numerically and experimentally evaluate the performance of programmable femtosecond pulse shaping with specified time-dependent amplitude and phase profiles using phase-only masks. With the masks that have discrete phase levels of ≥4 designed by simulated annealing optimization algorithm, various pulses with arbitrarily specified amplitudes, pulsewidths, and pulse intervals are obtained with high accuracy. However, when specifying temporal phase profiles together with the amplitude, the range of shaped output pulses that can be produced with phase-only masks is somewhat limited even with a phase level of 64. The efficiency of transmitted optical power in the experiments is ∼60%, mainly due to the diffraction loss at a grating pair, which is much higher than that using an amplitude-and-phase mask.

Original languageEnglish
Pages (from-to)346-352
Number of pages7
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume4
Issue number2
DOIs
Publication statusPublished - 1998 Mar 1

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Keywords

  • Femtosecond laser
  • Phase-only mask
  • Pulse shaping
  • Simulated annealing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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