Open AccessA variable-transmittance apodizing filter at 157 nm
Author(s) -
Theodore M. Bloomstein,
D. E. Hardy,
M. Rothschild
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.000648
Subject(s) - apodization , transmittance , optics , materials science , refractive index , transmission (telecommunications) , filter (signal processing) , optoelectronics , physics , electrical engineering , computer science , computer vision , engineering
A variable-transmittance apodizing filter has been designed and demonstrated at 157 nm. The Gaussian transmission function is created by flowing oxygen gas, which is absorptive below 185 nm, between the two spherical surfaces of meniscus lenses. By varying the oxygen partial pressure, the degree of apodization can be controlled.