The Design of a Continuous Wave Molecular Nitrogen Stimulated Raman Laser in the Visible Spectrum

Author

Timothy J. Bate

Date of Award

3-2020

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

Christopher A. Rice, PhD

Abstract

Hollow-core photonic crystal fibers (HCPCFs) shows promise as a hybrid laser with higher nonlinear process limits and small beam size over long gain lengths. This work focuses on the design of a CW molecular nitrogen (N₂) stimulated Raman laser. N₂ offers Raman gains scaling up to 900 amg, scaling higher than H₂. The cavity experiment showed the need to include Rayleigh scattering in the high pressure required for N₂ Raman lasing. Even at relatively low pressure ssuch as 1,500 psi, high conversion percentages should be found if the fiber length is chosen based on the pump and gain, 15 m for N₂ at 1500 psi with a predicted 87 conversion of the 4.2 W coupled from the 532 nm pump.

AFIT Designator

AFIT-ENP-MS-20-M-078

DTIC Accession Number

AD1108426

Recommended Citation

Bate, Timothy J., "The Design of a Continuous Wave Molecular Nitrogen Stimulated Raman Laser in the Visible Spectrum" (2020). Theses and Dissertations. 3883.
https://scholar.afit.edu/etd/3883