Optical filters with fractal transmission spectra based on diffractive optics.
The duality between the axial irradiance distribution originated by any circularly symmetric diffracting aperture under monochromatic illumination and its diffracted spectral intensity at a fixed on-axis point under broadband illumination is highlighted and experimentally investigated. Two applications are derived from this basic result. On the one hand, we suggest the use of a broadband source and a spectrometer for a single-shot measurement of the axial response of pupil filters. Second, we implement a spectral filter having a transmission spectrum with a fractal structure of frequencies. Experimental results and potential applications in synthetic spectra designs are provided.
Mendoza-Yero
Omel
O
Departament de Física, GROC-UJI, Universitat Jaume I, Catelló, Spain. omendoza@uji.es
Mínguez-Vega
Gladys
G
Fernández-Alonso
Mercedes
M
Lancis
Jesús
J
Tajahuerce
Enrique
E
Climent
Vicent
V
Monsoriu
Juan A
JA