TITLE

High-speed tuning of visible laser wavelength using a nanoimprinted grating optical tunable filter

AUTHOR(S)
Nien-Tsu Huang; Truxal, Steven C.; Yi-Chung Tung; Hsiao, Amy; Takayama, Shuichi; Kurabayashi, Katsuo
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/23/2009, Vol. 95 Issue 21, p211106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on a microelectromechanical tunable optical filter incorporating strain-tunable nanoimprinted elastomeric grating with a pitch varied by 18%. This device enables tuning of optical fiber-guided laser wavelength between λ=473 and 532 nm within 0.5 ms by mechanically modulating the pitch with a silicon microactuator. We also demonstrate the use of the device for obtaining two-color images of live/dead-stained cells with the color intensity ratio varied by the actuator voltage applied. The small structure of the device integrated on a silicon chip may be used in portable systems for optical switching and spectroscopy.
ACCESSION #
45478129

 

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