Development of a stimulated Brillouin scattering phase conjugate mirror for high average power laser
Abstract
The coherent beam combining using SBS PCMs is one of the most promising techniques to develop a high average power solid state bulk laser system. Its feasibility was proved experimentally in 2009 at the W class low power laser operating at the repetition rate of 10 Hz. Now the coherent beam combining using SBS PCMs at the high average power has being tried. One of the most important points of this work is development of SBS PCM for high input power. From the previous works, purifying the SBS medium, rotating the focal spot in the SBS cell, and flowing type cell was partially successful to improve the performance of the SBS PCM at the high input power. However, there still remain some issues. In order to utilize the SBS PCM for the high input power, it is necessary to resolve the jiggling effect and the optical haze in the SBS cell. In this research project, the researchers will find the new SBS media with high viscosity and high heat capacity, purify the SBS media, design and test the SBS cell, and construct the coherent beam combination laser system to demonstrate its feasibility. It is expected that this research project will take 2~3 years. It is expected that this research project can resolve the thermal problem and optical haze in the SBS PCM and demonstrate a high power coherent beam combination in the kW class laser system.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA23861910115XX0
Entities
People
- Hong Jin Kong
Organizations
- Air Force Office of Scientific Research
- KAIST
- United States Air Force