In-situ calibration of spatial light modulators in femtosecond pulse shapers

2014 ◽  
Author(s):  
B. Döpke ◽  
J. C. Balzer ◽  
M. R. Hofmann
Keyword(s):  
Femtosecond Pulse ◽  
Spatial Light Modulators ◽  
Light Modulators ◽  
In Situ Calibration

Full in-situ characterization of spatial light modulators in an optical correlator. Filter adaptation to operating curves

1998 ◽  
Vol 45 (12) ◽  
pp. 2461-2472 ◽  
Author(s):  
Octavio López-Coronado ◽  
Ignacio Moreno ◽  
Juan Campos ◽  
María J. Yzuel
Keyword(s):  
Spatial Light Modulators ◽  
In Situ Characterization ◽  
Light Modulators ◽  
Optical Correlator

Femtosecond Pulse Shaping with Twisted-Nematic Liquid-Crystal Spatial-Light Modulators

1999 ◽  
Vol 38 (Part 1, No. 10) ◽  
pp. 5898-5904
Author(s):  
Toshiaki Hattori ◽  
Kouhei Kabuki ◽  
Yoshitsugu Kawashima ◽  
Masahiro Daikoku ◽  
Hiroki Nakatsuka
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Pulse Shaping ◽  
Femtosecond Pulse ◽  
Spatial Light Modulators ◽  
Light Modulators ◽  
Twisted Nematic ◽  
Twisted Nematic Liquid Crystal

Giant Anisotropy of Conductivity in Hydrogenated Nanocrystalline Silicon Thin Films

1998 ◽  
Vol 536 ◽  
Author(s):  
A. B. Pevtsov ◽  
N. A. Feoktistov ◽  
V. G. Golubev
Keyword(s):  
Thin Films ◽  
Film Thickness ◽  
Percolation Theory ◽  
Nanocrystalline Silicon ◽  
Spatial Light Modulators ◽  
Light Emitting ◽  
Light Modulators ◽  
Silicon Thin Films ◽  
Longitudinal Conductivity ◽  
Transverse Conductivity

AbstractThin (<1000 Å) hydrogenated nanocrystalline silicon films are widely used in solar cells, light emitting diodes, and spatial light modulators. In this work the conductivity of doped and undoped amorphous-nanocrystalline silicon thin films is studied as a function of film thickness: a giant anisotropy of conductivity is established. The longitudinal conductivity decreases dramatically (by a factor of 109 − 1010) as the layer thickness is reduced from 1500 Å to 200 Å, while the transverse conductivity remains close to that of a doped a- Si:H. The data obtained are interpreted in terms of the percolation theory.

scholarly journals Ag-Yb Alloy-Novel Tunable Plasmonic Material

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 288
Author(s):  
Suetying Ching ◽  
Chakming Chan ◽  
Jack Ng ◽  
Kokwai Cheah
Keyword(s):  
Beam Steering ◽  
Volume Ratio ◽  
Response Strength ◽  
Transmission Efficiency ◽  
Spatial Light Modulators ◽  
Alloy Thin Film ◽  
Ellipsometric Measurement ◽  
Plasmonic Material ◽  
Light Modulators ◽  
Surface Plasmon Coupling

Metals are commonly used in plasmonic devices because of their strong plasmonic property. However, such properties are not easily tuned. For applications such as spatial light modulators and beam steering, tunable plasmonic properties are essential, and neither metals nor other plasmonic materials possess truly tunable plasmonic properties. In this work, we show that the silver alloy silver–ytterbium (Ag-Yb) possesses tunable plasmonic properties; its plasmonic response strength can be adjusted as a function of Yb concentration. Such tunability can be explained in terms of the influence of Yb on bound charge and interaction of its dielectric with the dielectric of Ag. The change in transition characteristics progressively weakens Ag’s plasmonic properties. With a spectral ellipsometric measurement, it was shown that the Ag-Yb alloy thin film retains the properties of Ag with high transmission efficiency. The weakened surface plasmon coupling strength without dramatic change in the coupling wavelengths implies that the tunability of the Ag-Yb alloy is related to its volume ratio. The principle mechanism of the plasmonic change is theoretically explained using a model. This work points to a potential new type of tunable plasmonic material.

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