Gamma-radiation-induced negative nonlinear absorption in quartz glass
Abstract
The effect of ionizing radiation on the nonlinear optical properties of materials needs to be considered for applications that employ high-power laser pulses in extreme radiation environments. The Heraeus Infrasil302 optical quartz glass was irradiated by gamma rays, and its nonlinear absorption was measured using the open-aperture Z-scan technique with nanosecond laser pulses. Irradiation results in a negative nonlinear absorption coefficient whose magnitude increases with irradiation dose. Nonlinear absorption coefficients of −0.78, −1.14, −1.29, and −1.88~ × ~10−13 m/W are measured for gamma doses of 600 krad, 1.2 Mrad, 3.6 Mrad, and 10 Mrad, respectively. Thermal annealing restores the optical properties of quartz-glass to their unirradiated values. It is suggested that metallic impurities introduced by the manufacturing process have a role in inducing saturated absorption in irradiated quartz glass, which manifests as negative nonlinear absorption coefficient, and is demonstrated by comparing Infrasil302 quartz results to equivalent irradiated measurements for Spectrosil2000 quartz.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 23, 2022
- Source ID
- 10.1364/ome.449877
Entities
People
- Bryan W. Morgan
- Igor Jovanovic
- Matthew P. Van Zile
- Milos Burger
- Piyush Sabharwall
Organizations
- Idaho National Laboratory
- Ohio State University
- United States Department of Defense
- United States Department of Energy
- University of Michigan