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Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
Large-aperture chirped volume Bragg grating based fiber CPA system
Kai-Hsiu Liao1, Ming-Yuan Cheng, Emilie Flecher
1EECS Department, University of Michigan,1301 Beal Avenue, Ann Arbor, Michigan 48109, USA. liaok@umich.edu
Optics Express
|June 18, 2009
Summary
A new fiber chirped pulse amplification system uses Photo-Thermal-Refractive (PTR) glass gratings for efficient pulse stretching and compression. This technology enables high pulse energies and resolves dispersion mismatch issues in compact systems.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Chirped Pulse Amplification (CPA) systems are crucial for generating high-intensity laser pulses.
- Existing compact pulse compression technologies face limitations in energy scaling and dispersion management.
Purpose of the Study:
- To demonstrate a novel fiber CPA system utilizing Photo-Thermal-Refractive (PTR) glass volume Bragg gratings.
- To showcase the advantages of PTR glass gratings for pulse stretching and compression in terms of efficiency, scalability, and dispersion control.
Main Methods:
- Development of large-aperture volume Bragg gratings in PTR glass for stretcher and compressor components.
- Integration of these gratings into a 1558 nm fiber CPA system.
- Leveraging the reciprocity of chirped gratings to mitigate stretcher-compressor dispersion mismatch.
Main Results:
- Successful demonstration of a compact, monolithic, and optically efficient fiber CPA system.
- Achieved high pulse energies and powers exceeding current compact technologies due to large, homogeneous PTR glass gratings.
- Effective compensation for stretcher-compressor dispersion mismatch using reciprocal grating operation.
Conclusions:
- PTR glass volume Bragg gratings offer a promising new avenue for advanced CPA systems.
- This technology enables scalable, high-energy pulse generation with improved dispersion management.
- The developed system represents a significant advancement in compact laser pulse amplification.
