Authors: Y. Fink and J.D. Joannopoulos
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uthors: Y. Fink and J.D. Joannopoulos A.M. Stolyarov, L. Wei, O. Shapira, F. Sorin, S.L. Chua, J.D. Joannopoulos, Y. Fink, Nature Photon. Forthcoming (2012). Polarization PBG structure max min Radial mode a b PBG structure 1 μm c s V 1 LC 1 LC 2 s V 2 z Pump beam 99V 0V 42V LC 1 V 1 = 30 µm Linear polarizer z z 0V 42V 99V LC 2 V 2 = Laser cavity A directionally controlled radial fiber laser. a. Schematic drawing of the radially emitting fiber laser structure and energy density plot for a high-Q TE 0n fiber cavity laser mode. The outgoing, radially-directed red arrows denote the direction of laser emission. b. (left) SEM micrograph of the multimaterial fiber device. Four light modulators surround the fiber core. Each modulator consists of a hollow microchannel (filled post-draw with liquid crystals (LCs)) flanked by conductive polyethylene electrodes. (right) Zoom view of the multilayer structure forming the PBG cavity. The white and grey layers correspond to As 25 S 75 and polycarbonate, respectively. c. (center) Schematic of the fiber device depicting the simultaneous laser intensity control transmitting through two oppositely facing LC- filled microchannels, labeled as LC 1 and LC 2 . The problem of directing laser light is recognized as an important one for a variety of applications. Current solutions could be classified into ones that utilize moving mechanical parts and ones that rely on non- mechanical mechanisms. While having advantages such as high angular precision, the non- mechanical solutions are nevertheless constrained to a narrow angular range. Fink and Joannopoulos have developed a multimaterial fiber light source with the built-in function of controlling its emission around a full 360 degrees. This new capability, implemented monolithically within a single fiber, presents exciting opportunities ranging from flexible multidirectional displays to minimally invasive directed light delivery systems for medical applications. -III Highlight: Multimaterial fiber controls the emission of laser Michael F. Rubner, Massachusetts Institute of Technology, DMR 0819762
description
IRG-III Highlight : Multimaterial fiber controls the emission of laser light. b. a. Michael F. Rubner , Massachusetts Institute of Technology, DMR 0819762. Radial mode. 1 μm. Authors: Y. Fink and J.D. Joannopoulos. Laser cavity. - PowerPoint PPT Presentation
Transcript of Authors: Y. Fink and J.D. Joannopoulos
Authors: Y. Fink and J.D. Joannopoulos
A.M. Stolyarov, L. Wei, O. Shapira, F. Sorin, S.L. Chua, J.D. Joannopoulos, Y. Fink, Nature Photon. Forthcoming (2012).
PolarizationPBG structure
max min
Radial modea b
PBG structure
1 μm
c
sV1
LC1 LC2
s
V2
zPump beam
99V
0V
42V
LC1
V1 =
30 µ
m
Linear p
olarizer
z z0V
42V
99V
LC2
V2 =
Laser cavity
A directionally controlled radial fiber laser. a. Schematic drawing of the radially emitting fiber laser structure and energy density plot for a high-Q TE0n fiber cavity laser mode. The outgoing, radially-directed red arrows denote the direction of laser emission. b. (left) SEM micrograph of the multimaterial fiber device. Four light modulators surround the fiber core. Each modulator consists of a hollow microchannel (filled post-draw with liquid crystals (LCs)) flanked by conductive polyethylene electrodes. (right) Zoom view of the multilayer structure forming the PBG cavity. The white and grey layers correspond to As25S75 and polycarbonate, respectively. c. (center) Schematic of the fiber device depicting the simultaneous laser intensity control transmitting through two oppositely facing LC-filled microchannels, labeled as LC1 and LC2.
The problem of directing laser light is recognized as an important one for a variety of applications. Current solutions could be classified into ones that utilize moving mechanical parts and ones that rely on non-mechanical mechanisms. While having advantages such as high angular precision, the non-mechanical solutions are nevertheless constrained to a narrow angular range. Fink and Joannopoulos have developed a multimaterial fiber light source with the built-in function of controlling its emission around a full 360 degrees. This new capability, implemented monolithically within a single fiber, presents exciting opportunities ranging from flexible multidirectional displays to minimally invasive directed light delivery systems for medical applications.
IRG-III Highlight: Multimaterial fiber controls the emission of laser light
Michael F. Rubner, Massachusetts Institute of Technology, DMR 0819762
![A Bibliography of Publications of James H. Wilkinsonnetlib.sandia.gov/bibnet/authors/w/wilkinson-james-hardy.pdf2 [Wil70a]. Algebraicznych [Wil67b]. Alg ebraiques [Wil62a, Wil63a].](https://static.fdocument.org/doc/165x107/60bce05fdf587713017de3e2/a-bibliography-of-publications-of-james-h-2-wil70a-algebraicznych-wil67b.jpg)
