Improving the beam quality of DPALs by refractive index gradients induced by the pump beam in the heated gain medium: experimental verification of the theoretical prediction
Abstract
We recently predicted [J. Opt. Soc. Am. B 35, 558 (2018)JOBPDE0740-322410.1364/JOSAB.35.000558] that large radial gradients of the refractive index induced by the pump beam in the heated gain medium of diode-pumped alkali lasers (DPALs) could lead to improved DPAL beam quality. This effect depends on the composition of the buffer gas in the cell. We report here on verifying this counterintuitive finding by careful measurements of the beam quality factor M 2 in static Cs DPALs with different compositions of the buffer gases.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 25, 2021
- Source ID
- 10.1364/josab.415552
Entities
People
- Boris D. Barmashenko
- Eyal Yacoby
- Ilya Auslender
- Nitzan Mayorkas
- Roei Luzon
- Salman Rosenwaks
- Svyatoslav Kostyukovets
Organizations
- Air Force Office of Scientific Research
- Israel Science Foundation
- Office of Naval Research Global