The VO2 thin film of highly optical switching rate for laser protection in infrared detector

2017 ◽  
Author(s):  
Xiongyuanyue Xiao ◽  
Da Su ◽  
Qing Cheng ◽  
Jianjun Lai ◽  
Ying Huang
Keyword(s):  
Thin Film ◽  
Optical Switching ◽  
Infrared Detector ◽  
Switching Rate

scholarly journals Tunable Infrared Optical Switch Based on Vanadium Dioxide

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2988
Author(s):  
Qi Wang ◽  
Shijie Zhang ◽  
Chen Wang ◽  
Rui Li ◽  
Tianhan Cai ◽  
...  
Keyword(s):  
Thin Film ◽  
Vanadium Dioxide ◽  
Optical Switching ◽  
Modulation Depth ◽  
Optical Switch ◽  
Extinction Ratio ◽  
Infrared Region ◽  
Metallic Phase ◽  
Ultrafast Switching ◽  
Difference Time

A tunable infrared optical switch based on a plasmonic structure consisting of aluminum nanoarrays with a thin film of vanadium dioxide is proposed. This optical switch can realize arbitrary wavelength-selective optical switching in the mid-infrared region by altering the radii of the aluminum nanoarrays. Furthermore, since vanadium dioxide transforms from its low-temperature insulator phase to a high-temperature metallic phase when heated or applied voltage, the optical switch can achieve two-way switching of its “ON” and “OFF” modes. Finite-difference time-domain software is used to simulate the performance of the proposed infrared optical switch. Simulation results show that the switch offers excellent optical performances, that the modulation depth can reach up to 99.4%, and that the extinction ratio exceeds −22.16 dB. In addition, the phase transition time of vanadium dioxide is on the femtosecond scale, which means that this optical switch based on a vanadium dioxide thin film can be used for ultrafast switching.

scholarly journals Hardening and Optimizing of the Black Gold Thin Film as the Absorption Layer for Infrared Detector

2013 ◽  
Vol 03 (02) ◽  
pp. 281-283 ◽  
Author(s):  
Dong-pei Qian ◽  
Chuan-gui Wu ◽  
Yao Shuai ◽  
Wen-bo Luo ◽  
Qiang-xiang Peng ◽  
...  
Keyword(s):  
Thin Film ◽  
Infrared Detector ◽  
Absorption Layer ◽  
Gold Thin Film

Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film

2011 ◽  
Vol 98 (7) ◽  
pp. 071105 ◽  
Author(s):  
S. B. Choi ◽  
J. S. Kyoung ◽  
H. S. Kim ◽  
H. R. Park ◽  
D. J. Park ◽  
...  
Keyword(s):  
Thin Film ◽  
Vanadium Dioxide ◽  
Optical Switching ◽  
All Optical ◽  
All Optical Switching

Improved electrochromic performance of a radio frequency magnetron sputtered NiO thin film with high optical switching speed

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79668-79680 ◽  
Author(s):  
K. S. Usha ◽  
R. Sivakumar ◽  
C. Sanjeeviraja ◽  
Vasant Sathe ◽  
V. Ganesan ◽  
...  
Keyword(s):  
Thin Film ◽  
Radio Frequency ◽  
Optical Switching ◽  
Switching Time ◽  
Rf Magnetron Sputtering ◽  
Optical Modulation ◽  
Switching Speed ◽  
Coloration Efficiency ◽  
Fast Switching ◽  
Nio Thin Film

A nickel oxide (NiO) thin film with better reversibility, high optical modulation, and enhanced coloration efficiency with fast switching time was prepared using radio frequency (rf) magnetron sputtering technique.

Thin film YBCO infrared detector design and characterization

1992 ◽  
Author(s):  
M. Fardmanesh ◽  
M. Ihsan ◽  
K. Scoles ◽  
A. Rothwarf
Keyword(s):  
Thin Film ◽  
Infrared Detector ◽  
Detector Design

All optical switching in henna thin film

2013 ◽  
Vol 112 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Fryad Z. Henari ◽  
Khalil E. Jasim
Keyword(s):  
Thin Film ◽  
Optical Switching ◽  
All Optical ◽  
All Optical Switching

Dependence of Infrared Photoresponse of Pyroelectric Thin Film Detector with Respect to Chopper Frequency

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3365-3368
Author(s):  
Yansong Chen ◽  
N. J. Wu ◽  
A. Ignatiev
Keyword(s):  
Thin Film ◽  
Theoretical Analysis ◽  
Infrared Detector ◽  
Experimental Results

In this paper, the dependence of infrared photoresponse of a pyroelectric thin film detector with respect to chopper frequency is studied theoretically and experimentally. The expressions of photocurrent, photovoltage and a special chopper frequency f m at which the maximum photovoltage is generated, are derived. A PMSZT/YBCO heterostructure is taken as the pyroelectric infrared detector and its photocurrent and photovoltage dependence on chopper frequency was measured. The experimental results are satisfactory and in agreement with theoretical analysis.

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