Results 201 to 210 of about 7,385 (261)

Optimal excitation polarization schemes to boost the precision of single-molecule orientation imaging. [PDF]

Biomed Opt Express
Nie KA, Qiu Y, Lew MD.
europepmc   +1 more source

Frequency-domain photoacoustic microscopy with resonant transducer and interferometric modulation for high-reliability sO₂ imaging. [PDF]

Photoacoustics
Lee YJ, Eom TJ, Wang LV.
europepmc   +1 more source

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Polarization beam splitters using polarization diffraction gratings

Optics Letters, 2001
We report a polarization beam splitter that uses polarization gratings written onto a zero-twist nematic liquid-crystal display. We show three configurations. The first two separate the diffracted light into two orthogonally polarized orders that are either linearly or circularly polarized.
Carlos R Fernández-Pousa, Ignacio Moreno, Jingo Adachi   +2 more
exaly   +3 more sources

Reflecting polarizing beam splitter

Optics Letters, 1997
We propose and experimentally demonstrate the use of metal-covered lamellar relief gratings as a polarizing beam splitter operating at a single wavelength near Littrow incidence. We report the characteristics of a grating produced by holography and reactive ion etching that was calculated for operation as beam splitter at lambda = 633 nm (for a He-Ne ...
C R, Lima, L L, Soares, L, Cescato, A L, Gobbi   +3 more
openaire   +2 more sources

Achromatization of Wollaston polarizing beam splitters

Optics Letters, 2011
We describe the achromatization of Wollaston prisms to reduce the angular dispersion in the splitting angle. Analytical theory and ray-tracing modeling is presented. In an example application, a sixfold reduction in dispersion is achieved for wavelengths in the region 400 nm to 1.7 μm.
Gerald, Wong, Roger, Pilkington, Andrew R, Harvey   +2 more
openaire   +2 more sources

Polarizing holographic beam splitter on a photoresist

Optics Letters, 1995
A method to take advantage of high-spatial-frequency surface-relief gratings as polarizing beam splitters is described. The analogy between that kind of grating and a volume grating is the basis of the theoretical predictions. Results of rigorous calculations are presented. High polarizing performances are demonstrated.
S, Habraken, O, Michaux, Y, Renotte, Y, Lion   +3 more
openaire   +2 more sources

Metallized photoresist grating as polarizing beam-splitter

Diffractive Optics and Micro-Optics, 2000
We propose and demonstrate the use of a simple holographic relief photoresist grating covered with an aluminum film as a reflecting polarizing beam splitter. The polarizing effects were achieved as a result of the nonsinusoidal profile of the grating. The best parameters of the gratings for optimizing the polarizing-beam-splitting properties were found
L L, Soares, L, Cescato
openaire   +2 more sources

On-chip silicon switchable polarization beam splitter

Optics Letters, 2022
We propose and experimentally demonstrate an on-chip switchable polarization beam splitter (PBS) using silicon waveguides. To the best of our knowledge, it is the first demonstration of an on-chip PBS that is not only able to split polarization beams but can be tuned to allow these beams to switch the output paths.
Shaojie Yin, Huaqing Qiu, Zhibin Wang, Daoxin Dai, Xiaowei Guan   +4 more
openaire   +2 more sources