Research of Thin Film for Laser Polarization Beam Splitter

2015 ◽  
Vol 645-646 ◽  
pp. 381-387
Author(s):  
Xiu Hua Fu ◽  
Yong Gang Pan ◽  
Dong Mei Liu ◽  
Jing Zhang ◽  
Xiao Juan Wang
Keyword(s):  
Thin Film ◽  
Design Theory ◽  
Beam Splitter ◽  
Incident Angle ◽  
Damage Threshold ◽  
Polarization Beam Splitter ◽  
Internal Electric Field ◽  
Laser Polarization ◽  
Deposition Parameters ◽  
Laser Induced Damage

Based on the design theory of film stack,H4 and SiO2 were selected as the high and low refractive index materials respectively. Through optimization by Macleod and TFCalc software, plus considering the internal electric field intensity distribution of film and laser induced damage threshold as well,the beam-splitting film with Tp=65±5% and Ts=30±5% in the 600-700 band in condition of 45 °± 3 ° incident angle has been achieved. Adopting electron beam ion assisted deposition system to development, the deposition parameters of materials has been optimized via orthogonal matrix experiment. The fabrication of thin film for laser polarization beam splitter has been succeeded. Its optical properties, mechanical properties and resistance to environmental test of the film have been approved to meet all using requirements.

Influence of negative ion element impurities on laser induced damage threshold of HfO2 thin film

2006 ◽  
Vol 253 (3) ◽  
pp. 1111-1115 ◽  
Author(s):  
ShiGang Wu ◽  
GuangLei Tian ◽  
ZhiLin Xia ◽  
JianDa Shao ◽  
ZhengXiu Fan
Keyword(s):  
Thin Film ◽  
Damage Threshold ◽  
Negative Ion ◽  
Laser Induced Damage

Design and fabrication of thin-film polarizer at wavelength of 1540 nm and investigation of its laser-induced damage threshold

2014 ◽  
Vol 129 (12) ◽  
Author(s):  
Masoume Sahraee ◽  
Hamid Reza Fallah ◽  
Badri Moradi ◽  
Hosein Zabolian ◽  
Morteza Haji Mahmoodzade
Keyword(s):  
Thin Film ◽  
Damage Threshold ◽  
Laser Induced Damage

Polarization-Beam Splitter based on Thin-Film Element Hybridly Integrated in Polymer Waveguide

2015 ◽  
Vol 35 (11) ◽  
pp. 1113002
Author(s):  
翟羽萌 Zhai Yumeng ◽  
王瑾 Wang Jin ◽  
陆云清 Lu Yunqing ◽  
许吉 Xu Ji ◽  
付旭 Fu Xu
Keyword(s):  
Thin Film ◽  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Polymer Waveguide ◽  
Film Element

Study and Fabrication of Multi-Band Filter Film on ZnS Substrate

2013 ◽  
Vol 552 ◽  
pp. 147-151 ◽  
Author(s):  
Jing Zhang ◽  
De Gui Sun ◽  
Xiu Hua Fu ◽  
Dong Mei Liu
Keyword(s):  
Incident Angle ◽  
Damage Threshold ◽  
Film Structure ◽  
Thickness Control ◽  
Band Filter ◽  
Laser Induced Damage ◽  
Deposited Film ◽  
Salt Fog ◽  
Deposition Technology ◽  
Multi Band

In order to satisfy the special requirements of IR optical instrument, multi-band filter film on the substrate of ZnS is deposited by adopting electron beam vacuum depositing method with the ion assistant deposition technology. At incident angle of 0°～25°, 660nm high reflection and 1064nm and 3～5μm high transmission are realized. ZnS and YbF3 are selected as the high and low refractive index materials, and the film structure prepared easily is getting by optimizing the film system design curve ceaselessly. The precision of thickness control has been improved by adjusting film process parameters and improving film thickness control methods. The adhesion and firmness of film and substrate has been increased by pre-coating and mixed evaporation technology, and the laser induced damage threshold of film has been improved with vacuum annealing. The deposited film can endure the environmental tests such as rain pour, salt fog, and high and low temperature etc, and meet its practical requirement.

Laser-induced damage threshold of thin film in a gas chamber

1999 ◽  
Author(s):  
Feng Huang ◽  
Qihong Lou ◽  
Hongyi Gao ◽  
Jinxing Dong ◽  
Yunrong Wei
Keyword(s):  
Thin Film ◽  
Damage Threshold ◽  
Laser Induced Damage ◽  
Gas Chamber

scholarly journals The pulsed laser damage sensitivity of optical thin films, thermal conductivity

1989 ◽  
Vol 7 (3) ◽  
pp. 433-441 ◽  
Author(s):  
Arthur H. Guenther ◽  
John K. McIver
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Thermal Conductivity ◽  
Flow Analysis ◽  
Pulsed Laser ◽  
Damage Threshold ◽  
Deposition Process ◽  
Film Structure ◽  
Film Research ◽  
Laser Induced Damage

Pulsed laser induced damage of optical thin films is, in general, initiated by the absorption of laser radiation by imperfections in the films or at interfaces between film layers and/or the substrate. A heat flow analysis of this process stresses the importance that the thermal conductivity of both the thin film host and that of the substrate play in establishing the laser-induced damage threshold. Unfortunately, recent work, which will be reviewed in this presentation, indicates that the thermal conductivity of thin films can be several orders of magnitude lower than that of the corresponding material in bulk form. This situation arises as a consequence of the film structure resulting principally from the deposition process. The importance of thermal conductivity will be compared to parameters such as absorption mechanisms, film materials, composition, and other variables. Its implication for the ultimate optical strength of materials and the direction in which thin film research and processing should proceed will be highlighted.

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