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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Ultrafast temporal pulse shaping via phase-sensitive three-wave mixing.
Y C Yin1, D French, I Jovanovic
1School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907, USA.
Optics Express
|August 20, 2010
Summary
Phase-sensitive optical parametric amplification (OPA) can precisely shape ultrashort laser pulses. This technique offers advanced pulse compression and steepening, enhancing laser system performance.
Area of Science:
- Nonlinear Optics
- Quantum Optics
- Laser Physics
Background:
- Optical parametric amplification (OPA) is sensitive to incident wave phases.
- Three-wave mixing OPA amplifies signal phase at the expense of signal energy.
- Existing passive pulse shaping methods operate in the Fourier domain.
Purpose of the Study:
- Analyze the use of phase-sensitive OPA for temporal shaping of ultrashort laser pulses.
- Identify pulse shaping capabilities beyond conventional Fourier domain methods.
- Evaluate the potential for pulse compression, steepening, and generation of pulse structures.
Main Methods:
- Numerical modeling of phase-sensitive OPA in the temporal domain.
- Analysis of ultrashort laser pulse shaping.
- Investigation of group velocity mismatch effects.
Main Results:
- Phase-sensitive OPA can significantly compress ~100 fs pulses.
- The technique enables steepening of ultrashort pulse rise times.
- Production of pulse doublets and pulse trains is achievable.
- Group velocity mismatch can enhance the pulse shaping process.
Conclusions:
- Phase-sensitive OPA offers powerful capabilities for ultrashort laser pulse shaping.
- This technique can augment conventional passive pulse shapers.
- The demonstrated capabilities are feasible with common nonlinear crystals and femtosecond lasers.
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