Optical constant determination of an anisotropic thin film via polarization conversion

Jen, Yi‐Jun; Peng, Cheng-Yu; Chang, Heng-Hao

doi:10.1364/oe.15.004445

Cited by 29 publications

(13 citation statements)

References 10 publications

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“…The phase retardation remained the same from 2 to 72 h after fabrication. Using a sensitive polarization conversion method 30 , we found that all three principal refractive indexes of a Ta 2 O 5 thin film did not vary from 1 to 144 h after fabrication. Figure 4, when the incident light is linearly polarized at 45° to the x axis in the xy plane.…”

Section: Methodsmentioning

confidence: 94%

Biologically inspired achromatic waveplates for visible light

Jen

Lakhtakia

et al. 2011

Nat Commun

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Waveplates are planar devices used in optics and optoelectronics to change the polarization state of light. made of anisotropic dielectric materials such as crystals and thin films, waveplates are not known to exhibit achromatic performance over the visible regime. Inspired by the microvillar structure of R8 cells functioning as polarization converters in the eyes of stomatopod crustaceans, we conceived, designed, fabricated and tested periodically multilayered structures comprising two different types of arrays of nanorods. morphologically analogous to the ocular cells, here we show that the periodically multilayered structures can function as achromatic waveplates over the visible regime.

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Section: Methodsmentioning

confidence: 94%

Biologically inspired achromatic waveplates for visible light

Jen

Lakhtakia

et al. 2011

Nat Commun

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“…The deposition rate was maintained at 0.6 nm/s read by quartz thickness monitor next to the substrate during deposition. The optical constants of the anisotropic thin film were found to be 1 (n , 2 n , 3 , ) n β = (1.304, 1.303, 1.323, 41.5 )° by measuring the angular spectrum of polarization conversion reflectance [8]. The thickness of the film was 1100 nm.…”

Section: Experimental Modulation By An Anisotropic Mgf 2 Thin Filmmentioning

confidence: 99%

Near-perfect modulator for polarization state of light

Jen

Chen

et al. 2008

J. Nanophoton

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Abstract. The ability of a weakly anisotropic thin film to modulate the polarization state of light was considered. We found that, in a configuration for enhanced polarization conversion, most polarization states can be generated by tuning the direction of incident linear polarization and the aspect of the anisotropic thin film. The modulation for omniform polarization state can be extended to a broad wavelength range by adding an isotropic thin film in the system.

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“…The birefringence of typical dielectric anisotropic thin films (MgF 2 , TiO 2 and SiO 2 ) is small-less than 0.03. However, enhanced polarization conversion (PC) reflectance (the reflected p-polarization light intensity divided by the incident s-polarization light intensity) can be detected by such a low dielectric anisotropic thin film in a prism coupling system (prism/film/air) and by allowing the deposition plane defined by the rods and the surface normal not to be coincident with the plane of incidence [6]. The PC reflectance Rsp increases as the orientation of film increases from 0 • to 90 • .…”

Section: Introductionmentioning

confidence: 99%