基本信息科学研究教育教学论文专著
基本信息


张学如，男，汉族，理学博士，教授，博士生导师；哈尔滨工业大学理学院物理系。

荣誉称号
2005年 获哈尔滨工业大学华为奖

工作经历
时间工作经历
200704-今哈尔滨工业大学物理系，教授，博士生导师
200609-今哈尔滨工业大学物理系，教授
199907-200608哈尔滨工业大学物理系，副研究员
200209-200309德国亚琛工业大学访问


教育经历
1986年9月-1990年8月，就读于哈尔滨工业大学应用物理系，本科生，获学士学位1990年9月-1993年2月，就读于哈尔滨工业大学应用物理系，硕士研究生，获硕士学位1993年3月-1997年1月，就读于哈尔滨工业大学物理系，博士研究生，获理学博士学位


主要任职
黑龙江省物理学会 理事

科研项目

项目名称1.金属纳米膜中表面等离激元与光波的非线性相互作用研究

项目来源国家自然科学基金

开始时间2014-01-01

结束时间2017-12-01

项目经费81

担任角色负责
项目类别横向项目
项目状态完成


项目名称折射率测试仪

项目来源横向项目

开始时间2012-08-01

结束时间2015-08-01

项目经费10

担任角色负责
项目类别横向项目
项目状态进行中


研究领域
非线性光学表面等离子亚波长光学


团队成员
暂无填写


讲授课程
大学物理 II简介:非线性光学简介:


招生信息
暂无填写


论文期刊

论文标题Analysis of focal-shift effect in planar metallic nanoslit lenses

作者Yang Gao, Jianlong Liu, Xueru Zhang, Yuxiao Wang, Yinglin Song, Shutian Liu, Yan Zhang

期刊名称Optics Express

期卷20(2)

简单介绍A theoretical analysis based on scalar diffraction theory about the recently reported focal-shift phenomena in planar metallic nanoslit lenses is presented. Under Fresnel approximation, an axial intensity formula is obtained, which is used to analyze the focal performance in the far field zone of lens. The relative focal shift is totally dependent on the Fresnel number only. The influences of the lens size, preset focal length and incident wavelength can be attributed to the change of Fresnel number. The total phase difference of the lens is approximately equal to the Fresnel number multiplied by pi. Numerical simulations performed using finite-difference time-domain (FDTD) and near-far field transformation method are in agreement with the theoretical analysis. Using the theoretical formula assisted by simple numerical method, we provide predictions on the focal shift for the previous literatures.


论文标题Metallic planar lens with binary nanoscale slits

作者Yang Gao, Jianlong Liu, Xueru Zhang, Yuxiao Wang, Yinglin Song, Shutian Liu

期刊名称IEEE Photonics Technology Letter

期卷24(11)

简单介绍We propose a binary plasmonic lens based on metallic nanoslit array with different fillings. The phase range of pi is achieved by changing the refractive indices of the filling materials in the slits. These index-modulated slits are demonstrated to have unique advantages in phase delay compared with the width-modulated ones. The proposed binary structures can keep the advantage in phase modulation and reduce the difficulty in fabrication. Lenses with different functions, such as focusing light to one or two points or correcting oblique incident light, are designed by a simulated annealing algorithm and investigated by the finite-difference time-domain method.


论文标题Slow surface plasmon polaritons with a large normalized delay bandwidth product in an ultracompact metal gap superlattice

作者Chunlei Li, Xueru Zhang, Yuxiao Wang, Yinglin Song, Degui Kong, Yueke Wang

期刊名称Optics communications

期卷285(7)

简单介绍We propose a metal gap superlattice that can decrease the group velocity of surface plasmon polaritons (SPPs) with a large normalized delay bandwidth product (NDBP) and small high-order dispersion. The length of the superlattice is only 8.60 mu m and the transmission is 0.4. The multiple reflections of photons in the nanocavity result in slow SPP group velocity. The numerical analysis exploiting the transfer matrix method (TMM) is confirmed by the finite-difference time-domain (FDTD) numerical simulations. In addition, we also analyze the reason for pulse deformation.


论文标题Single band upconversion mechanisms of Er3+/Yb3+:ZrO2 nanocrystals

作者Lu Liu, Yuxiao Wang, Yunfeng Bai, Xueru Zhang, Kun Yang, Chuanhai Huang, Yinglin Song

期刊名称Optics communications

期卷285(6)

简单介绍We demonstrate single band upconversion spectra of Er3+ and Yb3+ codoped ZrO2 nanocrystals. Ratios of green to red emission in Er3+ doped ZrO2 and red to green emission in Er3+/Yb3+ codoped ZrO2 are 8 and 10, respectively. Rate equations for rare earth energy level populations are used to investigate the upconversion mechanisms on the basis of the upconversion intensity dependences of pump power. Excited state absorption and energy transfer are the dominant processes in Er3+ doped and Er3+/Yb3+ codoped ZrO2, respectively.


论文标题Optical temperature sensor through infrared excited blue upconversion emission in Tm3+/Yb3+ codoped Y2O3

作者Dongyu Li, Yuxiao Wang, Xueru Zhang, Kun Yang, Lu Liu, Yinglin Song

期刊名称Optics communications

期卷285(7)

简单介绍An analysis of the intense blue upconversion emission at 476 and 488 nm in Tm3+/Yb3+ codoped Y2O3 under excitation power density of 86.7 W/cm(2) available from a diode laser emitting at 976 nm, has been undertaken. Fluorescence intensity ratio (FIR) variation of temperature-sensitive blue upconversion emission at 476 and 488 nm in this material was recorded in the temperature range from 303 to 753 K. The maximum sensitivity derived from the FIR technique of the blue upconversion emission is approximately 0.0035 K-1. The results imply that Tm3+/Yb3+ codoped Y2O3 is a potential candidate for the optical temperature sensor.


论文标题Measurements of dynamics of nondegenerate optical nonlinearity in ZnS with pulses from optical parameter generation

作者Min Shui, Zhongguo Li, Xiao Jin, Junyi Yang, Zhongguo Nie, Guang Shi, Xingzhi Wu, Kun Yang, Xueru Zhang, Yuxiao Wang, Yinglin S

期刊名称Optics communications

期卷285(7)

简单介绍We expand the degenerate PO pump-probe technique to nondegenerate field and use it to investigate optical nonlinear dynamics in ZnS single crystal. Excited by 532-nm laser pulses with 21-ps duration, the temporal response of nondegenerate nonlinear absorption and nondegenerate nonlinear refraction are probed by laser pulses from optical parameter generation (OPG) at 600 and 680 nm with pulse width of 10 ps. Based on the theory of free-carrier optical nonlinearity, we study the pure free-carrier refraction in ZnS. By numerically fitting based on the nondegenerate pump-probe theory, the nondegenerate two-photon absorption coefficient, the free-carrier lifetime, the free-carrier absorptive cross section and refractive coefficient at both probe wavelengths are determined respectively. The dispersion of the free-carrier refractive coefficients is discussed.


论文标题Upconversion mechanisms and thermal effects of Er3+ in Er3+ doped yttria nanocrystals

作者Liu, L; Wang, YX ; Zhang, XR; Yang, K ; Li, J ; Liu, G; Song, YL

期刊名称JOURNAL OF LUMINESCENCE

期卷132(6):148

简单介绍 Efficient Er3+:Y2O3 phosphor is synthesized by the sol-gel method. Rate equations for Er3+ energy level populations are used to investigate pump power and temperature dependences of upconversion intensity as well as the fluorescence decay profiles. Excited state absorption cross section of Er3+ I-4(13/2) of 6.8 x 10(-27) m(2) and cross relaxation rate of 6200 s(-1) are determined from comparison between theoretical predictions and experimental data. In addition, it is found that effect of temperature on the phonon-assistant absorption cannot be neglected. This work provides references for the prediction of the upconversion behavior in Er3+ singly doped matrix.


论文标题Nonlinear absorption of CS2 at the wavelength of 400 nm with femtosecond pulses

作者Kong, DG ; Chang, Q ; Gao, YC ; Ye, HA; Zhang, LX; Shi, G; Zhang, XR; Wang, YX; Yang, K; Song, YL

期刊名称PHYSICA B-CONDENSED MATTER

期卷407(8)

简单介绍Nonlinear absorption of carbon disulfide (CS2) was investigated by Z-scan technique and time-resolved pump-probe technique with femtosecond pulses at 400 nm wavelength. By the two techniques, we confirmed that the nonlinear absorption of CS2 arise from a combination of two-photon absorption (TPA) and the excited state absorption induced by TPA under the incident laser pulses with 400 nm wavelength. The coefficient of TPA, the absorption cross-section of low excited state and lifetime of low excited state were obtained by theoretical fitting the experimental results. The results indicated that the CS2 has good optical limiting capability at 400 nm wavelength.


论文标题Enhanced upconversion fluorescence of Er3+:ZrO2 nanocrystals induced by phase transformation

作者Liu, L; Chen, YJ; Zhang, XL; Wang, YX ; Zhang, XR; Song, YL

期刊名称AIP ADVANCES

期卷2(1)

简单介绍In this letter, we demonstrate for the first time a growth of monoclinic phase ZrO2 nanocrytals based on a sol-gel method, compared to the ordinary sol-gel procedure, our method decreases the synthesized temperature from similar to 1000 degrees C to similar to 800 degrees C. In addition, it is found that Er3+ in monoclinic phase ZrO2 nanocrystals have greatly enhanced upconversion emissions under infrared LD excitation due to its lower environmental symmetry.


论文标题Optical bistability of subwavelength metallic film coated by Kerr dielectric gratings

作者Wang, JC; Wang, YK ; Zhang, XR ; Song, YL ; Liu, ST

期刊名称OPTIK

期卷123(8)

简单介绍We studied the optical bistability of subwavelength metallic film coated by Kerr dielectric gratings numerically. It is found that the effect of optical bistability in the structure is explained by the excitations of the coupled surface plasmon polaritons at the coated metallic films. The effect of thickness of the metallic films on bistability loop is analyzed in detail, and the authors attribute the change of the bistability loop to the lifetime of the coupled surface plasmon polaritons.