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	1. Design of direct-vision prisms with minimized spectral and spatial distortions for dispersive imaging spectrometers
	Mu Tingkui
	Physics 03 February 2017
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	Abstract:The spectral and spatial distortions, known as "smile" and "keystone", introduced by dispersive prisms in dispersive imaging spectrometers usually are nuisance for the accurate reconstruction of spectra and images. In addition to the software correction of distortion, the system designs, such as direct-vision compound prism, is also critical to reduce those distortions before corrections. In this paper, using vector ray tracing method, distortions and dispersive lengths are derived analytically for three-element or two-element compound prisms. The distortions are found to be the complex functions of the apex angles, the refractive indices and the incident vector on the first surface of the prisms, and relate to the focal length of imaging lens in the dispersive imaging spectrometer. The merit functions to optimize apex angles for the selected glasses at the fixed focal length over incident vectors are proposed. The presented method is useful for the designs of compound prisms in the dispersive imaging spectrometers with high accuracy.
	TO cite this article:Mu Tingkui. Design of direct-vision prisms with minimized spectral and spatial distortions for dispersive imaging spectrometers[OL].[ 3 February 2017] http://en.paper.edu.cn/en_releasepaper/content/4717708


	2. Constrained estimation for calibration of Stokes polarimeter in the presence of different noise
	Mu Tingkui
	Physics 17 January 2017
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	Abstract:During the calibration of a Stokes polarimeter, the noisy measurement data will degrade the accuracy of the estimated system matrix. In this paper, by taking into account the physical constraints in terms of radiometric calibration and system response, two constrained estimation methods are proposed to improve the calibration accuracy in the presence of signal-independent additive Gaussian noise, signal-dependent Poisson shot noise, or their combination. Both the numerical and experimental results show that the proposed constrained Maximum-likelihood (ML) estimation has the best accuracy, especially when the noisy measurement data have low signal-to-noise ratio, and the proposed constrained Least-Square (CLS) estimation is more effective than the conventional unconstrained Least-Square (ULS) estimation. The proposed estimation methods are useful for the calibration of the Stokes polarimeter with high accuracy.
	TO cite this article:Mu Tingkui. Constrained estimation for calibration of Stokes polarimeter in the presence of different noise[OL].[17 January 2017] http://en.paper.edu.cn/en_releasepaper/content/4717725

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	3. A Novel Optical Temperature Sensor Based on Surface Plamon Polariton Resonator
	ZONG Yan,LANG Peilin,YU Li,DUAN Gaoyan,PAN Zijuan
	Physics 29 December 2016
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	Abstract:In this paper, we present a novel optical temperature sensor based on a nanoscale surface plasmon polariton (SPP) resonator. A bimetal layer is applied in the structure to detect the changes in temperature. The resonance wavelength of the SPP resonator shifts with the deformation of the bimetal layer. The effect of temperature on the refractive index of the material is also discussed. The finite element method(FEM) is employed to numerically calculate the reflectance spectra. To our knowledge, it is the first design of an SPP temperature sensor based on thermal deformation, and this structure may be applied in the future integrated optical circuit.
	TO cite this article:ZONG Yan,LANG Peilin,YU Li, et al. A Novel Optical Temperature Sensor Based on Surface Plamon Polariton Resonator[OL].[29 December 2016] http://en.paper.edu.cn/en_releasepaper/content/4715308


	4. Radiation properties of metal nanorods at the optical frequency domain
	Chenglong Zhao,Jiasen Zhang
	Physics 20 December 2016
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	Abstract:In this paper we investigated the radiation properties of metal nanorods at the optical frequency domain and found that they have many features compared with its conventional radio-wave equivalents. After defining a parameter Λ = λeff /λ, which was the ratio of the effective wavelength of the rod antenna to the incident wavelength, we found that Λ had a great influence on the radiation pattern. When the radiation pattern has a higher resonant order, it has a sharper directivity even without side lobes, which provides new design flexibilities in improving the directivities of the optical antennas.
	TO cite this article:Chenglong Zhao,Jiasen Zhang. Radiation properties of metal nanorods at the optical frequency domain[OL].[20 December 2016] http://en.paper.edu.cn/en_releasepaper/content/4713849


	5. Linear polarization rotator via an L-shaped nanohole in a metallic film
	Guochao Liu,Quanshui Li,Jing Yang,Jiasen Zhang
	Physics 16 December 2016
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	Abstract:An L-shaped nanohole in a gold film is proposed to realize linear polarization rotation of light at subwavelength scale and its optical properties are analyzed using the finite difference time domain method. The mechanism of the polarization rotation is based on the 180 degree phase retardation between two different resonant modes with orthogonal polarization directions in the L-shaped nanohole. The working wavelength of the polarization rotator can be tuned conveniently in the range of 735-1080 nm by varying the hole length.
	TO cite this article:Guochao Liu,Quanshui Li,Jing Yang, et al. Linear polarization rotator via an L-shaped nanohole in a metallic film[OL].[16 December 2016] http://en.paper.edu.cn/en_releasepaper/content/4714462


	6. One-step hydrothermal route to Bi2O2(BO2OH)/BiIO4 heterojunction with improved photocatalytic performance
	Yang Jie,Pan Xionglong,Lin Sen,Bi Ke,Liang Ce,Yao Chongchong,Du Yinxiao,Liu Jun,Fan Dongyue,Yang Hujiang,Wang Yonggang,Lei Ming
	Physics 08 December 2016
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	Abstract:The novel Bi2O2(BO2OH)/BiIO4 heterojunction was successfully synthesized via a facile one-step hydrothermal method. Its characters were detected by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM) and UV–Vis diffuse reflectance (DRS). Photocayalytic activity was measured by decomposition of Rhodamine B (RhB) under UV-light irradiation. Compared with Bi2O2(BO2OH), BiIO4 and P25, 35 wt% BiIO4/Bi2O2(BO2OH) exhibits much better performance for degradation. This significant enhancement of degradation dye and prohibitive electron-hole pairs’ recombination should be ascribed to overlapping conduction band and valence band structure.
	TO cite this article:Yang Jie,Pan Xionglong,Lin Sen, et al. One-step hydrothermal route to Bi2O2(BO2OH)/BiIO4 heterojunction with improved photocatalytic performance[OL].[ 8 December 2016] http://en.paper.edu.cn/en_releasepaper/content/4709164


	7. Optical properties and fabrication of Yb3+/Ho3+ co-doped air-cladding fiber
	XIA Changming,ZHOU Guiyao,LIU Jiantao,ZHANG Wei,YUAN Jinhui,HOU Zhiyun
	Physics 12 October 2016
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	Abstract:In this paper, the Yb3+/Ho3+ co-doped air-cladding fibers with 0.08 Ho2O3 -0.15 Yb2O3-1.5Al2O3-98.27 SiO2 (mol%) and low OH are fabricated with the stack-capillary-draw technique. The influence of drawn temperature and drawn speed on the fiber structure are studied. The influence of the fiber length on the optical properties is experimentally demonstrated. Experimental results show that the Yb3+/Ho3+ co-doped air-cladding fibers can be used as the potential material for the fiber laser at the visible and infrared spectral regions.
	TO cite this article:XIA Changming,ZHOU Guiyao,LIU Jiantao, et al. Optical properties and fabrication of Yb3+/Ho3+ co-doped air-cladding fiber[OL].[12 October 2016] http://en.paper.edu.cn/en_releasepaper/content/4705402


	8. An optimized scheme of fiber-optic flexural seismometer with higher sensitivity
	PENG Feng,LV Yan,TIAN Shuaifei,CHEN Wenjing
	Physics 09 August 2016
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	Abstract:The sensitivity of fiber optical seismometer could be further improved by optimizing the structure and using multilayer fiber coils. In this paper, the strain distribution of fiber coils is analyzed and simulated, the simulated result shows that not only the position, but also the number of the fiber layers have significant effects on the sensitivity. A 7-layer fiber coil that fixed on the optimized position obtain a higher sensitivity than other structures. The optimized structure is useful for designing a more practical disk-type seismometer that with higher sensitivity and lighter weight.
	TO cite this article:PENG Feng,LV Yan,TIAN Shuaifei, et al. An optimized scheme of fiber-optic flexural seismometer with higher sensitivity[OL].[ 9 August 2016] http://en.paper.edu.cn/en_releasepaper/content/4702088


	9. Influences of astigmatic focusing geometry on femtosecond filamentation and supercontinuum generation in fused silica
	SONG He,ZAFAR Saba,LI Dongwei,HAO Zuoqiang,LIN Jingquan
	Physics 08 June 2016
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	Abstract:The influences of focal lens tilting on the filamentation of femtosecond laser pulses in fused silica were studied experimentally. The length of filamentation, output beam profile and supercontinuum generation were found to be close related with the tilt angle of the focusing element. When the focusing lens is rotated, the filament breaks into two parts along the propagation axis. The distance between the two parts was calculated and well matched with the predicted results. it is also found that the supercontinum spectrum becomes narrower and its conversion efficiency becomes lower by rotating the focal lens.
	TO cite this article:SONG He,ZAFAR Saba,LI Dongwei, et al. Influences of astigmatic focusing geometry on femtosecond filamentation and supercontinuum generation in fused silica[OL].[ 8 June 2016] http://en.paper.edu.cn/en_releasepaper/content/4696878


	10. A Novel Fiber Optic Microphone with Three Flexural Disks
	WU Xuqiang,GE Qiang,ZHANG Gang
	Physics 31 May 2016
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	Abstract:A novel interferometric fiber-optic microphone is presented, which has high sensitivity and wide frequency response range simultaneously through utilizing three flexural disks of different resonance frequencies. Experimental results show its sensitivity is -105rad/re uPa, measuring bandwidth is 0~2.5KHz, the ripple is less than 5dB without obvious resonance peak.
	TO cite this article:WU Xuqiang,GE Qiang,ZHANG Gang. A Novel Fiber Optic Microphone with Three Flexural Disks[OL].[31 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4695131

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