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Research Progress of Optical H2O Sensor With a DFB Diode Laser

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Photonic Sensors 2014年第2期4卷 113-119页

作者： Guangping LV Jun CHANG qingpu wang Qiang wang Wei WEI School of Information Science and Engineering and Shandong Provincial Key Laboratory of Laser Technology andApplication Shandong University Jinan 250100 China

在察觉到的近红外线的 H2O 的领域里，吸收信号的获得通常从一个吵闹的背景，这样采用一个有效信号解调方法是重要的。这研究在踪迹水蒸汽察觉的领域里介绍了研究进步，盖住不同单个煤气的察觉技术。根据常规双横梁，微分吸收，在电压... 详细信息

在察觉到的近红外线的 H2O 的领域里，吸收信号的获得通常从一个吵闹的背景，这样采用一个有效信号解调方法是重要的。这研究在踪迹水蒸汽察觉的领域里介绍了研究进步，盖住不同单个煤气的察觉技术。根据常规双横梁，微分吸收，在电压的部门方法和基于二根邻近的吸收线的微分价值的双山峰的方法被学习了。电压分割有优秀稳定性到温度变化，机械挤出，和纤维拐弯损失。双山峰的方法与水蒸汽集中证明了一种线性关系，并且这个方法提供了一个方法在高压力测量集中。而且，所谓的平衡 ratiometer 察觉(BRD ) 被介绍。它一个突出的自动调节的能力，和它能也避免变换电路的 current-to-voltage 引起的过量阶段差别，因此，这个方法有高敏感。另外，用于煤气的察觉的第二种泛音技术被介绍，并且为经由驾驶电流的高周波的调整， 1/f 显然被压制；作为结果，这种技术由一～二个数量级认识到更好敏感的察觉。

关键词：半导体激光器传感器 H2O 分布反馈气体检测技术电压转换电路光学差分吸收

Effects of Mg Doping on Photoconductivity of GaN Films

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Journal of Materials Science & Technology 2003年第6期19卷 575-577页

作者： Deheng ZHANG, qingpu wang and Yunyan LIUSchool of Physics and Microelectronics, Shandong University, Jinan 250100, China Sch. of Phys. and Microelectronics Shandong Univ. Ji'nan 250100 China

This paper presents the UV photoconductivity properties of GaN films doped with different Mg concentrations deposited by MOCVD. It was observed that for the undoped and weakly doped GaN films the UV photocurrent response was relatively large and the relax time was relatively short. With an increase in doped Mg content, the samples became p-type, the photocurrent response became weak and the relax time became longer.

关键词： GaN UV photodetector Doping MOCVD

Impulse-Coupling Coefficient of Laser-Surface Interaction in Air

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Chinese Physics Letters 1994年第4期11卷 250-252页

作者： MEI Liangmo XIA Yueyuan wang qingpu XU Bingzhang TAN Chunyu ZHAO Shengzhi wang Xiangtai wang Gongtang Department of Physics Shandong UniversityJinan 250100 Department of Physics Shandong Normal UniversityJinan 250002

Impulse-copling coefficients,for A1 and Cu samples with finite surface area irradiated in air by 1.06μm,10ns laser pulses produced by a Nd:YAG laser,have been measured experimentally.A modified theoretical model of impulse-coupling is proposed,which significantly improves the agreement between the calculated impulse-coupling coefficient and the measured one.

关键词： Nd:YAG 1.06μm laser

Effects of Substrate Temperature on Properties for Transparent Conducting ZnO:A1 Films on Organic Substrate Deposited by r.f. Sputtering

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Journal of Materials Science & Technology 2001年第5期17卷 517-520页

作者： Deheng ZHANG, Dejun ZHANG and qingpu wang Department of Physics, Shandong University, Jinan 250100, China Tianlin YANG Institute of Zibo, Zibo 255091, China Dept. of Phys. Shandong Univ. Ji'nan 250100 China

This paper presents the substrate temperature dependence of opto-electrical properties for transparent conducting Al-doped ZnO films prepared on polyisocyanate (PI) substrates by r f sputtering. Polycrystalline ZnO:Al films with good adherence to the substrates having a (002) preferred orientation have been obtained with resistivities in the range from 4.1×10-3to 5.3×104 Ωcm, carrier densities more than 2.6×1020 cm-3 and Hall mobilities between 5.78 and 13.11 cm2/V/s for films. The average transmittance reaches 75% in the visible spectrum. The quality of obtained films depends on substrate temperature during film fabrication.

关键词： ZnO Sputtering Effects of Substrate Temperature on Properties for Transparent Conducting ZnO Al

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钩沉——山东大学光学记忆

中国激光 2021年第12期48卷 3-6页

作者：王青圃山东大学

探赜索隐,钩深致远。2021年,山东大学走过了120年的历程,沉淀累累。春夏之交,我走进山东大学中心校区(图1),眼见繁花层层叠叠,绿草与大树相映,一派春意盎然,生机勃勃的景象;图书馆前高大的松柏与古老的银杏,折射出山大百廿的沧桑巨变和... 详细信息

探赜索隐,钩深致远。2021年,山东大学走过了120年的历程,沉淀累累。春夏之交,我走进山东大学中心校区(图1),眼见繁花层层叠叠,绿草与大树相映,一派春意盎然,生机勃勃的景象;图书馆前高大的松柏与古老的银杏,折射出山大百廿的沧桑巨变和百廿山大的厚重底蕴;正门北望,七十二棵银杏南北排列两行,象征孔子弟子中的七十二贤,以示山大"为天下储人才,为国家图富强"的办学宗旨,以及山大人对先人和大师们的崇尚和敬畏。

关键词：七十二图书馆山东大学孔子弟子钩深致远办学宗旨

A binary-weighted 64-dB programmable gain amplifier with a DCOC and AB-class buffer

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Journal of Semiconductors 2012年第2期33卷 71-76页

作者：叶向阳王云峰张海英王卿璞 School of Physics Shandong UniversityJinan 250100China Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China

This paper designs a binary-weighted programmable gain amplifier（PGA） with a DC offset cancellation （DCOC） circuit and an AB-class output *** PGA adopts the circuit topology of a differential amplifier with diode-connected *** shows that the performance of the PGA is not sensitive to temperature and process *** to test results,controlled by a digital signal of six bits,the PGA can realize a dynamic gain of-2 to 61 dB,and a gain step of 1 dB with a step error within±0.38 *** minimum 3 dB bandwidth is 92 *** low-gain mode,IIP3 is 17 dBm,and a 1 dB compression point can reach 5.7 *** DCOC circuit enables the amplifier to be used in a direct-conversion receiver and the AB-class output buffer circuit reduces the overall static power consumption.

关键词： PGA DCOC AB class buffer binary-weighted

Intracavity　Frequency　Doubling　of　a　New　Low－threshold　High－efficiency　Crystal　Nd：Sr5（VO4）3F

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Chinese Journal of Lasers 1996年第5期B5卷 397-402页

作者： ZHAO Shengzhi wang qingpu ZHANG Xingyu wang Songtao ZHAO Lu (Optics Department, Shandong University, Jinan 250100, China)SUN Lianke ZHANG Shaojun (Institute of Crystal Materials, Shandong University, Jinan 250100, China) Shandong Univ Jinan China

ＩｎｔｒａｃａｖｉｔｙＦｒｅｑｕｅｎｃｙＤｏｕｂｌｉｎｇｏｆａＮｅｗＬｏｗ－ｔｈｒｅｓｈｏｌｄＨｉｇｈ－ｅｆｆｉｃｉｅｎｃｙＣｒｙｓｔａｌＮｄ：Ｓｒ＿５（ＶＯ＿４）＿３ＦＺＨＡＯＳｈｅｎｇｚｈｉ；ＷＡＮＧＱｉｎｇｐｕ... 详细信息

ＩｎｔｒａｃａｖｉｔｙＦｒｅｑｕｅｎｃｙＤｏｕｂｌｉｎｇｏｆａＮｅｗＬｏｗ－ｔｈｒｅｓｈｏｌｄＨｉｇｈ－ｅｆｆｉｃｉｅｎｃｙＣｒｙｓｔａｌＮｄ：Ｓｒ＿５（ＶＯ＿４）＿３ＦＺＨＡＯＳｈｅｎｇｚｈｉ；ＷＡＮＧＱｉｎｇｐｕ；ＺＨＡＮＧＸｉｎｇｙｕ；ＷＡＮＧ...

关键词： Nd: Sr5 (VO4 )3F crystal intracavity-doubling dye film Q -switch numerical solution

Efficient Lasing Demonstration of a New Crystal Nd: Sr5 （PO4）3F

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Chinese Journal of Lasers 1996年第3期B5卷 219-223页

作者： ZHAO Shengzhi wang qingpu ZHANG Xingyu(Department of Optics, Shandong University, Jinan 250100)SUN Lianke ZHANG Shaojun(Institute of Crystal Materials, Shandong University, Japan 250100) Shandong Univ Jinan China

Ｅｆｆｉｃｉｅｎｔ　Ｌａｓｉｎｇ　Ｄｅｍｏｎｓｔｒａｔｉｏｎ　ｏｆ　ａ　Ｎｅｗ　Ｃｒｙｓｔａｌ　Ｎｄ：Ｓｒ５（ＰＯ４）３ＦＥｆｆｉｃｉｅｎｔＬａｓｉｎｇＤｅｍｏｎｓｔｒａｔｉｏｎｏｆａＮｅｗＣｒｙｓｔａｌＮｄ：Ｓｒ５... 详细信息

Ｅｆｆｉｃｉｅｎｔ　Ｌａｓｉｎｇ　Ｄｅｍｏｎｓｔｒａｔｉｏｎ　ｏｆ　ａ　Ｎｅｗ　Ｃｒｙｓｔａｌ　Ｎｄ：Ｓｒ５（ＰＯ４）３ＦＥｆｆｉｃｉｅｎｔＬａｓｉｎｇＤｅｍｏｎｓｔｒａｔｉｏｎｏｆａＮｅｗＣｒｙｓｔａｌＮｄ：Ｓｒ５（ＰＯ４）３Ｆ￥ＺＨＡＯＳｈ...

关键词： Nd:S-FAP crystal laser tunable dye-laser pump

Xenon Flash Lamp Pumped Miniature Nd:S-VAP Pulsed Laser

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Chinese Journal of Lasers 1995年第1期B4卷 13-17页

作者： ZHAO Shengzhi wang qingpu ZHANG Xingyu(Optics Department,Shandong University,Jinan 250100,China)SUN Lianke ZHANG Shaojun (Institute of Crystal Materials,Shandong University,Jinan 250100,China) Shandong Univ Jinan China

ＸｅｎｏｎＦｌａｓｈＬａｍｐＰｕｍｐｅｄＭｉｎｉａｔｕｒｅＮｄ：Ｓ－ＶＡＰＰｕｌｓｅｄＬａｓｅｒＸｅｎｏｎＦｌａｓｈＬａｍｐＰｕｍｐｅｄＭｉｎｉａｔｕｒｅＮｄ：Ｓ－ＶＡＰＰｕｌｓｅｄＬａｓｅｒ￥ＺＨＡＯＳｈｅｎｇｚｈ... 详细信息

ＸｅｎｏｎＦｌａｓｈＬａｍｐＰｕｍｐｅｄＭｉｎｉａｔｕｒｅＮｄ：Ｓ－ＶＡＰＰｕｌｓｅｄＬａｓｅｒＸｅｎｏｎＦｌａｓｈＬａｍｐＰｕｍｐｅｄＭｉｎｉａｔｕｒｅＮｄ：Ｓ－ＶＡＰＰｕｌｓｅｄＬａｓｅｒ￥ＺＨＡＯＳｈｅｎｇｚｈｉ；ＷＡＮＧＱｉｎｇｐｕ；ＺＨＡＮ...

关键词： minature pulsed laser Nd:S-VAP crystal