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High-field mid-infrared pulses derived from frequency domain optical parametric amplification
Optics Letters
|April 15, 2020
Summary
Researchers developed a new method for high-peak-power mid-infrared laser pulses. This technique achieves carrier-envelope phase stabilization for few-cycle laser pulses, enabling advanced applications.
Area of Science:
- Optics and Photonics
- Nonlinear Optics
- Ultrafast Lasers
Background:
- Scaling peak power of ultrashort laser pulses is crucial for advanced scientific applications.
- Carrier-envelope phase (CEP) stabilization is essential for precise control of ultrashort laser pulses.
- Mid-infrared (MIR) ultrashort pulses offer unique properties for spectroscopy and material processing.
Purpose of the Study:
- To present a novel approach for scaling the peak power of few-cycle mid-infrared laser pulses.
- To achieve carrier-envelope phase (CEP) stabilization in the mid-infrared spectral region.
- To demonstrate a scalable architecture for generating high-energy, CEP-stabilized ultrashort pulses.
Main Methods:
- Utilized frequency domain optical parametric amplification (FOPA) to selectively amplify spectral slices of broadband pulses.
- Employed Fourier plane pulse shaping to control polarization and phase/delay between amplified spectral slices.
- Implemented intrapulse difference frequency generation (IDFG) for CEP stabilization and wavelength conversion.
Main Results:
- Generated two-cycle pulses centered at 9.5 µm with 25.5 µJ pulse energy.
- Achieved carrier-envelope phase (CEP) stabilization, demonstrated via high-harmonic generation in solids.
- Demonstrated a novel FOPA-based architecture for ultrashort pulse generation and manipulation.
Conclusions:
- The presented FOPA approach enables high-peak-power, CEP-stabilized mid-infrared few-cycle pulses.
- The demonstrated architecture is scalable to higher average and peak powers using existing laser technologies.
- This work paves the way for advanced applications requiring precisely controlled ultrashort mid-infrared laser pulses.
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