scholarly journals VO2-based Micro-Electro-Mechanical Tunable Optical Shutter and Modulator

2021 ◽  
Author(s):  
Jose Figueroa ◽  
Henry Dsouza ◽  
Juan Pastrana Gonzalez ◽  
David Torres ◽  
Harris Hall ◽  
...  
Keyword(s):  
Optical Shutter

scholarly journals Microfluidic Optical Shutter Flexibly x-y Actuated via Electrowetting-on-Dielectrics with <20 ms Response Time

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Henning Fouckhardt ◽  
Johannes Strassner ◽  
Carina Heisel ◽  
Dominic Palm ◽  
Christoph Doering
Keyword(s):  
Optical Properties ◽  
Response Time ◽  
Visible Spectral Range ◽  
Contact Structures ◽  
Light Path ◽  
Cell Type ◽  
Electrically Conductive ◽  
Droplet Movement ◽  
In Series ◽  
Optical Shutter

Tunable microoptics deals with devices of which the optical properties can be changed during operation without mechanically moving solid parts. Often a droplet is actuated instead, and thus tunable microoptics is closely related to microfluidics. One such device/module/cell type is an optical shutter, which is moved in or out of the path of the light. In our case the transmitting part comprises a moving transparent and electrically conductive water droplet, embedded in a nonconductive blackened oil, that is, an opaque emulsion with attenuation of 30 dB at 570 nm wavelength over the 250 μm long light path inside the fluid (15 dB averaged over the visible spectral range). The insertion loss of the cell is 1.5 dB in the “open shutter” state. The actuation is achieved via electrowetting-on-dielectrics (EWOD) with rectangular AC voltage pulses of 2·90 V peak-to-peak at 1 kHz. To flexibly allow for horizontal, vertical, and diagonal droplet movement in the upright x-y plane, the contact structures are prepared such that four possible stationary droplet positions exist. The cell is configured as two capacitors in series (along the z axis), such that EWOD forces act symmetrically in the front and back of the 60 nl droplet with a response time of <20 ms.

Passive Optical Shutter for Reducing the Fluorescent Output of a Pulsed Ruby Laser

1968 ◽  
Vol 39 (3) ◽  
pp. 419-419
Author(s):  
Burton G. Schuster ◽  
Robert D. Watson
Keyword(s):  
Ruby Laser ◽  
Optical Shutter

An Electro-Optical Shutter for Photographic Purposes

1949 ◽  
Vol 68 (1) ◽  
pp. 84-91 ◽  
Author(s):  
A. M. Zarem ◽  
F. R. Marshall ◽  
F. L. Poole
Keyword(s):  
Optical Shutter

scholarly journals Microsecond-range optical shutter for unpolarized light with chiral nematic liquid crystal

AIP Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 047122
Author(s):  
Mohammad Mohammadimasoudi ◽  
Jungsoon Shin ◽  
Keechang Lee ◽  
Kristiaan Neyts ◽  
Jeroen Beeckman
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Unpolarized Light ◽  
Chiral Nematic ◽  
Optical Shutter

Simple electromechanically operated optical shutter

1990 ◽  
Vol 61 (7) ◽  
pp. 2003-2004 ◽  
Author(s):  
Mao‐fu Ye ◽  
De‐yi Jiang ◽  
C. S. Wong
Keyword(s):  
Optical Shutter

Development of optical shutter system in Hefei Light Source

2011 ◽  
Vol 23 (1) ◽  
pp. 201-204
Author(s):  
王季刚 Wang Jigang ◽  
孙葆根 Sun Baogen ◽  
卢平 Lu Ping ◽  
王宝云 Wang Baoyun ◽  
王晓辉 Wang Xiaohui ◽  
...  
Keyword(s):  
Light Source ◽  
Optical Shutter
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