scholarly journals Photopolymeric films with highly tunable refractive index modulation for high precision diffractive optics

2015 ◽  
Vol 6 (1) ◽  
pp. 252 ◽  
Author(s):  
Alessio Zanutta ◽  
Enrico Orselli ◽  
Thomas Fäcke ◽  
Andrea Bianco
Keyword(s):  
Refractive Index ◽  
High Precision ◽  
Diffractive Optics ◽  
Refractive Index Modulation ◽  
Tunable Refractive Index ◽  
Index Modulation

scholarly journals Effect of Glycerol on an N-Vinylpyrrolidone-Based Photopolymer for Transmission Holography

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1754
Author(s):  
Huishi Pi ◽  
Weiping Li ◽  
Zhiwei Shi ◽  
Haining Chen ◽  
Xiaoyu Jiang
Keyword(s):  
Molecular Structure ◽  
Refractive Index ◽  
Diffraction Efficiency ◽  
Optimal Concentration ◽  
Diffractive Optics ◽  
Holographic Recording ◽  
Control Group ◽  
Refractive Index Modulation ◽  
Spatial Frequencies ◽  
Index Modulation

N-vinylpyrrolidone (NVP) has a large molecular structure, so it is difficult to diffuse during holographic recording, especially at low spatial frequencies. We used glycerol to promote the diffusion of NVP, and successfully improved the holographic performance of the photopolymer at low spatial frequencies. As the concentration of glycerol increases, the holographic performance first increases and then remains stable. The optimal concentration of glycerol is 0.21 mol/L. At this concentration, the maximum diffraction efficiency of the photopolymer is 84%, the refractive index modulation is 1.95 × 10−3, and the photosensitive sensitivity is 7.91 × 10−4 cm2/mJ. Compared with the control group, the maximum diffraction efficiency, maximum refractive index modulation and photosensitivity at low spatial frequencies (800 lp/mm) have increased by 11.19 times, 4.69 times and 1.71 times, respectively. Using the optimized photopolymer for transmission holographic recording and reproduction, we have obtained a clear and bright transmission hologram. The photopolymer modified with glycerol is expected to be applied to the fields of holography, diffractive optics, and so on.

Optical properties of a photopolymer with large refractive index modulation for holographic application

2004 ◽  
Author(s):  
Chang-Won Shin ◽  
Nam Kim ◽  
Won-Sun Kim ◽  
Yong-Cheol Jeong ◽  
Jung-Ki Park
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Refractive Index Modulation ◽  
Index Modulation

scholarly journals Wavelength selective refractive index modulation in a ROMP derived polymer bearing phenyl- and ortho-nitrobenzyl ester groups

2013 ◽  
Vol 1 (25) ◽  
pp. 3931 ◽  
Author(s):  
Matthias Edler ◽  
Stefan Mayrbrugger ◽  
Alexander Fian ◽  
Gregor Trimmel ◽  
Simone Radl ◽  
...  
Keyword(s):  
Refractive Index ◽  
Refractive Index Modulation ◽  
Polymer Bearing ◽  
Index Modulation

Refractive-Index Modulation by Means of Photosensitive Liquid Crystals

2002 ◽  
Vol 375 ◽  
pp. 45-60 ◽  
Author(s):  
Tomiki Ikeda ◽  
Satoshi Yoneyama ◽  
Takahiro Yamamoto ◽  
Makoto Hasegawa
Keyword(s):  
Refractive Index ◽  
Liquid Crystals ◽  
Refractive Index Modulation ◽  
Index Modulation

A Humidity Sensor Based on Ultra-Long-Period Fiber Gratings with Asymmetric Refractive Index Modulation

2009 ◽  
Vol 36 (8) ◽  
pp. 2042-2045 ◽  
Author(s):  
宋韵 Song Yun ◽  
朱涛 Zhu Tao ◽  
饶云江 Rao Yunjiang ◽  
赵英伟 Zhao Yingwei
Keyword(s):  
Refractive Index ◽  
Humidity Sensor ◽  
Refractive Index Modulation ◽  
Fiber Gratings ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Index Modulation
Sign in / Sign up

Export Citation Format

Share Document