The influence of diffraction gratings relief distortion on diffraction efficiency during authentication security holograms

2016 ◽  
Author(s):  
V. V. Kolyuchkin ◽  
S. B. Odinokov ◽  
I. K. Tsyganov
Keyword(s):  
Diffraction Efficiency ◽  
Diffraction Gratings ◽  
Authentication Security

scholarly journals Enhancement of diffraction efficiency of laminar-type diffraction gratings overcoated with diamond-like carbon (DLC) in soft x-ray region

2016 ◽  
Author(s):  
Masato Koike ◽  
Takashi Imazono ◽  
Tetsuya Nagano ◽  
Hiroyuki Sasai ◽  
Yuki Oue ◽  
...  
Keyword(s):  
Diffraction Efficiency ◽  
Diffraction Gratings ◽  
Diamond Like Carbon ◽  
X Ray

Underwater giant enhancement of broadband diffraction efficiency of surface diffraction gratings fabricated by femtosecond laser

2017 ◽  
Vol 121 (24) ◽  
pp. 243102 ◽  
Author(s):  
Fan Zhang ◽  
Cong Wang ◽  
Kai Yin ◽  
Xinran Dong ◽  
Yuxin Song ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Diffraction Efficiency ◽  
Diffraction Gratings ◽  
Surface Diffraction

scholarly journals Diffraction efficiency calculations of polarization diffraction gratings with surface relief

2018 ◽  
Vol 992 ◽  
pp. 012018 ◽  
Author(s):  
D Nazarova ◽  
P Sharlandjiev ◽  
N Berberova ◽  
B Blagoeva ◽  
E Stoykova ◽  
...  
Keyword(s):  
Diffraction Efficiency ◽  
Surface Relief ◽  
Diffraction Gratings

scholarly journals APPLICATION OF OPTICAL DIFFRACTOMETRY FOR THE ERROR MONITORING OF MANUFACTURING OF PRECISION OPTICAL ELEMENTS

2021 ◽  
Vol 8 ◽  
pp. 223-228
Author(s):  
Ruslan V. Shimansky ◽  
Andrey Yu. Kostyanichnikov ◽  
Roman I. Kuts ◽  
Dmitriy A. Belousov ◽  
Victor P. Korolkov
Keyword(s):  
Experimental Study ◽  
Diffraction Efficiency ◽  
Duty Cycle ◽  
Optical Element ◽  
Diffraction Gratings ◽  
Diffractive Optical Element ◽  
Error Monitoring ◽  
Optical Elements ◽  
Mutual Displacement

The work is devoted to an experimental study of the effectiveness of the method for measuring errors in manufacturing of computer-generated synthesized holograms using specialized marks. Each mark represents two aligned diffraction gratings with the same duty cycle and period, the first of which is formed before writing, and the second is formed in the process of forming the structure of the hologram. To determine the writing error, the method of optical diffractometry was used. The results of an experimental study of dependence of diffraction efficiency of the mark on the mutual displacement of parts of the microgratings are presented. The error manufacturing of a synthesized hologram arising during long-term writing of a diffractive optical element has been simulated experimentally.

Diffraction efficiency enhancement of femtosecond laser-engraved diffraction gratings due to CO2 laser polishing

2014 ◽  
Vol 65 (10) ◽  
pp. 1559-1565 ◽  
Author(s):  
Hun-Kook Choi ◽  
Deok Jung ◽  
Ik-Bu Sohn ◽  
Young-Chul Noh ◽  
Yong-Tak Lee ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Diffraction Efficiency ◽  
Co2 Laser ◽  
Diffraction Gratings ◽  
Efficiency Enhancement ◽  
Laser Polishing
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