Properties of volume holograms recording in photopolymer films with various pulse exposures repetition frequencies

2005 ◽  
Author(s):  
Qingsheng He ◽  
Haoyun Wei ◽  
Shurong He ◽  
Guofan Jin ◽  
Minxian Wu
Keyword(s):  
Volume Holograms

Spatial mode exchange technique using volume holograms with a random optical diffuser for reduction of crosstalk

2021 ◽  
Author(s):  
Shuanglu Zhang ◽  
Atsushi Okamoto ◽  
Taijun Shiba ◽  
Hotaka Hayashi ◽  
Kazuhisa Ogawa ◽  
...  
Keyword(s):  
Spatial Mode ◽  
Volume Holograms ◽  
Optical Diffuser ◽  
Exchange Technique

Diffraction efficiency of volume holograms

1975 ◽  
Vol 7 (1) ◽  
pp. 1-14 ◽  
Author(s):  
S. Kessler ◽  
R. Kowarschik
Keyword(s):  
Diffraction Efficiency ◽  
Volume Holograms

scholarly journals Volume holograms constructed from computer-generated masks

1978 ◽  
Vol 17 (16) ◽  
pp. 2537 ◽  
Author(s):  
S. K. Case ◽  
W. J. Dallas
Keyword(s):  
Volume Holograms

Photonic forbidden band in volume holograms

2001 ◽  
Author(s):  
Dahe Liu ◽  
Jun Zheng ◽  
Zhicheng Ye
Keyword(s):  
Volume Holograms

Image reconstruction by volume holograms with frequency conversion

1994 ◽  
Author(s):  
S. M. Karpuck ◽  
Alexander S. Rubanov ◽  
Alexei L. Tolstik ◽  
A. V. Chaley
Keyword(s):  
Image Reconstruction ◽  
Frequency Conversion ◽  
Volume Holograms

scholarly journals A New Three-Component Photo-Initiating System for Visible Light Recording of Volume Holograms with Single-Pulsed Laser

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3517
Author(s):  
Horst Berneth ◽  
Friedrich Karl Bruder ◽  
Thomas Fäcke ◽  
Sven Hansen ◽  
Koichi Kawamura ◽  
...  
Keyword(s):  
Alkyl Radical ◽  
Pulsed Laser ◽  
Holographic Recording ◽  
Radical Species ◽  
Holographic Gratings ◽  
Initiation System ◽  
Volume Holograms ◽  
Recording Material ◽  
Safranine O ◽  
Dye Molecule

Versatile substituted electron-deficient trichloromethylarenes can easily be synthesized and combined with a Safranine O/triarylalkylborate salt to form a highly efficient three-component photo-initiation system that starts free radical polymerization to finally form holographic gratings with a single-pulsed laser. The mechanism of this photo-initiation most likely relies on an electron transfer from the borate salt into the semi-occupied HOMO of the excited dye molecule Safranine O, which after fragmentation generates an initiating alkyl radical and longer-lived dye radical species. This dye radical is most probably oxidized by the newly introduced trichloromethylarene derivative as an electron acceptor. The two generated radicals from one absorbed photon initiate the photopolymerization and form index gratings in a suitable holographic recording material. This process is purely photonic and does not require further non-photonic post treatments.

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