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Transform-limited pulses for chirped-pulse amplification systems utilizing an active feedback pulse shaping technique
Dat Nguyen1, Mohammad Umar Piracha, Peter J Delfyett
1CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816-2700, USA. dtnguyen@creol.ucf.edu
Optics Letters
|December 4, 2012
Summary
This study demonstrates a fiber-based chirped-pulse amplification system using active feedback for pulse shaping. This method achieves a fivefold increase in peak power with a clean, high-contrast pulse.
Area of Science:
- Optics and Photonics
- Laser Physics
- Fiber Optics
Background:
- Chirped-pulse amplification (CPA) is crucial for generating high-intensity laser pulses.
- Achieving high pulse quality and peak power in fiber-based CPA systems remains a challenge.
Purpose of the Study:
- To experimentally demonstrate a fiber-based CPA system with active feedback for pulse shaping.
- To improve pulse quality and increase peak power.
Main Methods:
- Utilized a fiber-based chirped-pulse amplification (CPA) system.
- Implemented an active feedback loop for pulse shaping.
- Employed a spectral processor and frequency-resolved optical gating (FROG) for pulse characterization and optimization.
- Applied spectral phase and intensity shaping.
Main Results:
- Generated a clean, high-contrast, transform-limited pulse.
- Achieved 15 dB pedestal suppression in the pulse wing tails.
- Demonstrated a fivefold increase in the peak power of the CPA system.
Conclusions:
- The demonstrated fiber-based CPA system with active feedback effectively enhances pulse quality and peak power.
- This approach offers a viable method for generating high-performance laser pulses for various applications.
