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

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

doi:10.1109/2944.686741

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 journal › Review article › peer-review

28 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 language	English
Pages (from-to)	346-352
Number of pages	7
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	4
Issue number	2
DOIs	https://doi.org/10.1109/2944.686741
Publication status	Published - 1998 Mar
Externally published	Yes

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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10.1109/2944.686741

Cite this

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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.",

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AU - Takasago, Kazuya

AU - Takekawa, Makoto

AU - Suzuki, Masayuki

AU - Komori, Kazuhiro

AU - Kannari, Fumihiko

PY - 1998/3

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N2 - 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.

AB - 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.

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

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