Browsing by Author "Serpenguzel, A."
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Open Access Enhancement and inhibition of photoluminescence in hydrogenated amorphous silicon nitride microcavities(Optical Society of America, 1997-09-01) Serpenguzel, A.; Aydınlı, Atilla; Bek, A.A Fabry-Perot microcavity is used for the enhancement and inhibition of photoluminescence in hydrogenated amorphous silicon nitride. The amplitude of the photoluminescence is enhanced 4 times, while its linewidth is reduced 8 times with respect to the bulk hydrogenated amorphous silicon nitride. The transmittance, reflectance, and absorptance spectra of the microcavity were also measured and calculated. The calculated spectra agree well with the experimental ones. (C) 1997 Optical Society of AmericaItem Open Access Quarter wave Fresnel rhomb with colinear output beam(Optical Society of America Inc., Washington, DC, United States, 1999) Serpenguzel, A.A standard quarter wave (λ/4) Fresnel rhomb laterally displaces the output beam with respect to the input beam. This lateral displacement can cause problems when inserting the rhomb in an already aligned optical setup. This note describes the use of two λ/8 rhombs to construct a λ/4 rhomb. The output of the proposed rhomb is colinear with the input beam, and allows a much more flexible optical alignment.