Two-dimensional coherent detection imaging in multiple scattering media based on the directional resolution capability of the optical heterodyne method

1991 ◽  
Vol 52 (6) ◽  
pp. 391-394 ◽  
Author(s):  
M. Toida ◽  
M. Kondo ◽  
T. Ichimura ◽  
H. Inaba
Keyword(s):  
Multiple Scattering ◽  
Coherent Detection ◽  
Optical Heterodyne ◽  
Two Dimensional ◽  
Scattering Media ◽  
Heterodyne Method ◽  
Resolution Capability

Optical-heterodyne method for measuring surface strain

1984 ◽  
Vol 49 (4) ◽  
pp. 234-237
Author(s):  
T. Watanabe ◽  
K. Iwata ◽  
R. Nagata
Keyword(s):  
Surface Strain ◽  
Optical Heterodyne ◽  
Heterodyne Method ◽  
Measuring Surface

Ferroelectric Liquid Crystal Light Valve Using SiO2 / A-Si:H Photodiode

1991 ◽  
Vol 219 ◽  
Author(s):  
T. Horikawa ◽  
S. Tahata ◽  
S. Kaho ◽  
T. Masumi ◽  
N. Mikami ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Dark Conductivity ◽  
Ferroelectric Liquid Crystal ◽  
Two Dimensional ◽  
Metal Insulator ◽  
Resolution Capability ◽  
New Type ◽  
Light Valve ◽  
Mis Diode ◽  
High Photosensitivity

ABSTRACTA new type of ferroelectric liquid crystal light valve (FLCLV) is presented. The design of the FLCLV is based upon the linear equivalent circuit analyses. A photosensor in the FLCLV consists of a metal-insulator-semiconductor (MIS) photodiode. A-Si:H doped with boron and nitrogen [a-Si:(:N:B)] is used in the MIS diode. The a-Si:H(:B:N) film has a dark-conductivity of less than 1×1012 S/cm and a high photosensitivity.Consequently, the writing characteristics of the FLCLV for a two dimensional (2D) image are evaluated. Using writing light of 630 nm and 1 mW/cm2, a high resolution capability of 120∼140 1p/mm is obtained.

Determination of optical properties of multiple-scattering media by using a coherent-modulated source

1997 ◽  
Vol 28 (5) ◽  
pp. 218-224 ◽  
Author(s):  
X Intes ◽  
B Le Jeune ◽  
F Pellen ◽  
Y Guern ◽  
J Cariou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Multiple Scattering ◽  
Scattering Media

scholarly journals Effective Generation of Milliwatt-Level Sub-Terahertz Wave for Nonlinear Response Measurement of Two-Dimensional Material by Optical Heterodyne Technique

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Shuqing Chen ◽  
Zhiqiang Xie ◽  
Junmin Liu ◽  
Yanliang He ◽  
Yao Cai ◽  
...  
Keyword(s):  
Nonlinear Response ◽  
Modulation Depth ◽  
Terahertz Wave ◽  
Saturable Absorption ◽  
Optical Heterodyne ◽  
Two Dimensional ◽  
Response Measurement ◽  
Microwave Source ◽  
Terahertz Band ◽  
Heterodyne Technique

By using optical heterodyne technique, we demonstrated the stable emission of sub-terahertz wave with the frequency ranging from 88 GHz to 101 GHz, which can operate as microwave source for nonlinear response measurement system. Mutual frequency beating of two well-separated sideband signals at a 0.1 THz photo-detector (PD) allows for the generation of sub-terahertz signal. Based on this approach, we have achieved the radiation of 0.1 THz wave with power up to 4 mW. By transmittance measurement, two-dimensional nanomaterial topological insulator (TI: Bi2Te3) shows saturable absorption behaviors with normalized modulation depth of 47% at 0.1 THz. Our results show that optical heterodyne technique could be developed as an effective microwave source generation for nonlinear measurement at sub-terahertz, even terahertz band.

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