Ultrafast all-optical spatial light modulation based on complex refractive index changes of copper phthalocyanine-doped polymer film upon photoexcitation in guided mode geometry

2002 ◽  
Vol 205 (1-3) ◽  
pp. 107-112 ◽  
Author(s):  
Toshihiko Nagamura ◽  
Kyoichi Sasaki ◽  
Futoshi Iizuka ◽  
Tatsuo Adachi ◽  
Iori Yoshida
Keyword(s):  
Refractive Index ◽  
Polymer Film ◽  
Copper Phthalocyanine ◽  
Complex Refractive Index ◽  
Light Modulation ◽  
Guided Mode ◽  
All Optical ◽  
Spatial Light Modulation ◽  
Index Changes ◽  
Doped Polymer

ALL-OPTICAL REFLECTANCE CONTROL BASED ON PHOTOINDUCED COMPLEX REFRACTIVE INDEX CHANGES IN GUIDED MODE THIN FILMS CONTAINING INDIUM OR GALLIUM PHTHALOCYANINES

2002 ◽  
Vol 11 (03) ◽  
pp. 205-218 ◽  
Author(s):  
TOSHIHIKO NAGAMURA ◽  
ATSUSHI NAITO ◽  
IORI YOSHIDA ◽  
YU CHEN ◽  
MICHAEL HANACK
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Complex Refractive Index ◽  
Nanosecond Laser ◽  
Polymer Thin Film ◽  
Optical Reflectance ◽  
Guided Mode ◽  
All Optical ◽  
Silver Thin Film ◽  
Index Changes

Tetrasubstituted indium or gallium phthalocyanines and their dimers bridged with various ligands were dispersed in a polymer thin film, which was spin-coated on silver thin film vacuum-evaporated on a glass slide. All-optical reflectance control was achieved by complex refractive index changes upon photoexcitation of phthalocyanines by nanosecond laser in such a guided mode geometry. They gave rise in less than ns pulse width, and a few to a few tens of microseconds decay characteristic to the lifetime of the excited triplet state. Repeated and reversible reflectance changes were achieved. Axially bridged phthalocyanine dimers showed almost the same photoresponses as monomers.

High-speed light modulation using complex refractive-index changes of electro-optic polymers

2000 ◽  
Vol 77 (23) ◽  
pp. 3683-3685 ◽  
Author(s):  
Kenji Harada ◽  
Katsuhiro Munakata ◽  
Masahide Itoh ◽  
Toyohiko Yatagai ◽  
Yutaka Honda ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Speed ◽  
Complex Refractive Index ◽  
Light Modulation ◽  
Electro Optic ◽  
Index Changes
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