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摘要

This is a difficult kind of beam splitter in a cemented cube. The specification is: under angle of incidence (AOI)=55o, the reflectivity at 905 nm is no less than 85%, and in the visible range the average transmittance is 40+(-)2%, and T+R>=90%. Because the AOI is 55o, it needs to use a metal coating material to make sure the film be designed. The film has some problems on d

PDF全文 Chinese Optics Letters | 2013,11(s1):S10407
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0 495 1232

摘要

A fiber-optic relative-humidity (RH) sensor composed of multilayer of porous dielectric films is proposed. The transducer deposited on fiber end-face is multilayer coating consisting of nano-porous TiO2 and SiO2 films, which forms a low-fineness Fabry-Perot (F-P) filter with one of minimum reflections at about 1 350-nm wavelength. The dielectric thin films realized by e-beam ev

PDF全文 Chinese Optics Letters | 2013,11(s1):S10404
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0 574 1491

摘要

The preparation and characterization of in-plane polarized lead zirconate titanate (PZT) piezoelectric diaphragms for sensors and actuators applications are demonstrated in this letter. The single phase PZT films can be obtained on SiO2-passivated silicon substrates via sol-gel technique, in which PbTiO3 (PT) films are used as seed layers. Al reflective layer is deposited and p

PDF全文 Chinese Optics Letters | 2013,11(s1):S10403
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0 363 896

摘要

Design and preparation of multilayer optical coatings are investigated on laser crystal Nd:YVO4, YVO4, and frequency doubling crystal KTP substrate. Multilayer optical coatings are deposited on one surface of the crystals using the ion beam sputtering technique, and the other surface is coated with a single SiO2 as protective layer. For the YVO4 crystal after coating, the refle

PDF全文 Chinese Optics Letters | 2013,11(s1):S10406
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0 295 1428

摘要

For high precise laser systems like laser gyro, gravitational waves interferometers, the optical components which lie in the cavity or laser path need to control the total loss, scattering, reflection, absorption, and so on. Low loss high-reflection (HR) and antireflection (AR) coating mirrors are their key components and their aging optical properties are the most important pe

PDF全文 Chinese Optics Letters | 2013,11(s1):S10405
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0 0 1577

摘要

Aiming at the crosstalk problem caused by small spectral intervals between fluorescent reagents in fourplex fluorescence quantitative polymerase chain reaction (PCR) detection analysis system, we calculate and analyse the effect of cut-off steepness, central wavelength positioning, and bandwidth of filters on crosstalk. Design and prepare four sets of fluorescence excitation an

PDF全文 Chinese Optics Letters | 2013,11(s1):S10402
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0 372 1293

摘要

In this letter, using mult-half-wave structure and some chosen films optimized method, the long-wave infrared (LWIR) narrow-band pass filter is investigated, meanwhile the opposite of the substrate coated with long-wavelength pass film. The transmittance of design spectrum is more than 80% at wavelength region of 8.05–8.35 \mu m, and the average transmittance is less than 0.5%

PDF全文 Chinese Optics Letters | 2013,11(s1):S10401
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0 589 1928
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