Power-Scalable Blue-Green Bessel Beams
Abstract
The overall goal of this program was to demonstrate intermodal nonlinearities as a pathway for high-power all-fiber lasers at non-traditional emission wavelengths, and then to demonstrate a proof of concept of this methodology for achieving high-power blue-green tunabel lasers. The first part of the program, namely demonstrating that the use of Bessel beam like high order optical modes for nonlinear frequency translation, and hence emission, at non-standard wavelengths was highly successful, and cascaded emission down to 453 nm was achieved. We showed that a simple double-clad fiber suffices for all these demonstrations, thereby enabling significant cost reductions for future systems that employ this technique. We also showed that this technique is eminently scalable, and achieved tunable lasers in the 1um range with > 10 kW of peak power. The second part of the program, namely specifically building system to achieve emission at the desired blue colours, was, however, abandoned due to lack of funds relative to the original anticipated award amount.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 23, 2016
- Accession Number
- AD1004058
Entities
People
- Siddharth Ramachandran
Organizations
- Boston University