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Published on: July 12, 2017
High-gain photonic crystal fiber regenerative amplifier
Arun Kumar Sridharan1, Paul Pax, Michael J Messerly
1NIF and Photon Science Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA. sridharan1@llnl.gov
Optics Letters
|March 3, 2009
Summary
Researchers developed a photonic crystal fiber regenerative amplifier, achieving a record 69 dB gain. This high-gain fiber amplifier demonstrates significant advancements in laser technology for various applications.
Area of Science:
- Photonics
- Laser Physics
- Optical Engineering
Background:
- Regenerative amplifiers are crucial for amplifying low-energy pulses to high energies.
- Fiber-based amplifiers offer advantages in beam quality and scalability.
- Photonic crystal fibers provide unique light-guiding properties.
Purpose of the Study:
- To demonstrate a photonic crystal fiber-based regenerative amplifier.
- To achieve high gain at a specific wavelength (1.078 microm).
- To establish a new record for gain in fiber-based regenerative amplifiers.
Main Methods:
- Utilized a photonic crystal fiber as the gain medium.
- Employed a regenerative amplification scheme.
- Operated with an input pulse energy of 20 pJ, 12 ns pulse duration, and 3 kHz repetition rate.
- Applied 8.6 W of input pump power.
Main Results:
- Achieved an amplified output pulse energy of 157 microJ.
- Obtained a remarkable gain of 69 dB.
- This represents the highest gain reported for a fiber-based regenerative amplifier to date.
Conclusions:
- The demonstrated photonic crystal fiber regenerative amplifier offers unprecedented gain.
- This technology has potential for applications requiring high-energy, high-gain pulsed lasers.
- Further research can explore optimization for different wavelengths and power levels.
