INVESTIGATION INTO AN OPTIMUM DEVICE STRUCTURE FOR CLADDING LIGHT REMOVAL IN HIGH POWER FIBER LASERS
Abstract
A concise High power fiber lasers have attracted huge technical attention in the past two decades and been widely used in a variety of applications such as material processing, medicine, and defense. The state-of-the art, high power fiber lasers are based on the cladding pumping schemes, in which the signal beam is generated and amplified within the fiber core, while the pump beam propagates in the cladding. A critical passive component for the implementation of high power fiber laser oscillators and amplifiers is a cladding light stripper (CLS). The main goal of this project is to find an optimum structure of a CLS, which can be used for future high power fiber lasers in the defense area. In this two-year research project, we propose to explore various CLS structures and to find an optimum structure with the features of a high power handling capacity, a large cladding loss, and uniform light extraction with no hot spot issue. We plan to theoretically investigate CLS structures by solving beam propagation modes within the device with a numerical simulation technique. In particular, both backward scattering and forward scattering are to be taken into account. One of the main focuses in our investigation is to design a repeatable and reliable device structure in terms of easy and repeatable fabrication. We believe that this research results will provide the key technical information for the design of reliable CLS’s for high power laser applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 07, 2021
- Source ID
- FA23862014055
Entities
People
- Ju Han Lee
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Seoul