Title :
Spatial filtering by using cascading plamonic gratings
Author :
Wang, C.M. ; Chang, Y.C. ; Tsai, D.P.
Author_Institution :
Inst. of Opto-Electron. Eng., Nat. Dong Hwa Univ., Hualien, Taiwan
Abstract :
In this paper, cascading plasmonic gratings were investigated. The angle dependent reflection spectrum of the proposed structure displays a resonance peak at a specific angle. The FWHM of the resonant peak is smaller than 2deg. The angular dispersion of the cascading plasmonic gratings is about dthetas/dlambda=0.15deg/nm. The cascading plasmonic gratings can be used as a spatial filter which can improve the spatial coherence of a light source.
Keywords :
diffraction gratings; light coherence; light reflection; optical dispersion; plasmonics; spatial filters; spatial light modulators; surface plasmons; angle dependent reflection spectrum; angular dispersion; cascading plasmonic grating; light source; resonance peak; spatial coherence; spatial filter; spatial light modulator; surface plasmons; Filtering; Gratings; Nonhomogeneous media; Optical films; Optical filters; Optical reflection; Optical surface waves; Plasmons; Resonance; Spatial filters; (230.6120) Spatial light modulators; (240.6680) Surface plasmons;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
