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谱线宽度

谱线宽度的相关文献在1983年到2021年内共计69篇,主要集中在物理学、无线电电子学、电信技术、电工技术 等领域,其中期刊论文59篇、会议论文6篇、专利文献13285篇;相关期刊48种,包括实验教学与仪器、滨州学院学报、淮北职业技术学院学报等; 相关会议6种,包括第十届全国超导薄膜和超导电子器件学术研讨会、2007全国时间频率学术会议、中国西部十二省区市物理学会联合学术会议等;谱线宽度的相关文献由172位作者贡献,包括宋敏、冷静、古里博志等。

谱线宽度—发文量

期刊论文>

论文:59 占比:0.44%

会议论文>

论文:6 占比:0.04%

专利文献>

论文:13285 占比:99.51%

总计:13350篇

谱线宽度—发文趋势图

谱线宽度

-研究学者

  • 宋敏
  • 冷静
  • 古里博志
  • 张懿
  • 张玉华
  • 张艳燕
  • 李体莲
  • 熊崎贵仁
  • 石田启介
  • 艾时英
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 郑文杰; 刘铁根; 楚奇梁; 俞琳; 田苗
    • 摘要: 本文提出一种用于温度传感的气体吸收谱线宽度检测方法,该方法基于比尔-朗伯定律中气体吸收谱线宽度与温度关系,以特征线宽代替半高全宽(FWHM)进行线宽的测量.研究气体所处环境的温度改变对气体吸收谱线宽度的影响.以乙炔气体为例,在0~90°C的温度范围内,测量了其5条较强吸收谱线的特征线宽变化情况.特征线宽测量值标准差<0.6 pm,温度分辨力<2°C,稳定性好.此方法有效避免了光源功率的波动对特征线宽测量的影响,提高了线宽测量的准确性,该方法应用于气体温度测量具有可行性.%This paper proposes a method to detect the linewidth of gas absorption spectra for temperature sensing, which is based on the relationship between gas absorption spectral linewidth and temperature ac-cording to the Beer-Lambert Law, introducing the typical linewidth instead of the full width at half maxi-mum ( FWHM) to measure the spectral linewidth.While temperature varied, we measured the typical linewidths to obtain the relationship between them.Taking acetylene as an example, we measured the typical linewidths changing with tempurature of 5 absorption lines.In this process, the temperature varied within 0—90 °C, and the maximum typical linewidth standard deviation is 0.6 pm.The temperature res-olution is <2 °C.This method avoids the laser power fluctuation influencing on temperature, which im-proves the accuracy in linewidth measurement and makes it possible to apply it to the measurement of gas temperature.
    • 石英亮; 张羽; 孙力军
    • 摘要: In order to optimize the phase noise characteristics and improve the performance of an optoelectronic oscillator ( OEO) , the relation among the phase noise of an OEO , the spectra line-width and optical power was studied by theoretical analysis and experimental verification .The spectral performance and phase noise of microwave signals generated by the OEO were measured respectively , under the conditions of equal optical power and different spectra line-widths.And then, phase noise of microwave signals was measured under the conditions of fixed spectral line -width and different laser power .The results indicate that the narrower spectral line-width and the higher laser power , the better phase noise and spectral characteristics of microwave signals.Furthermore, compared with the spectral line-width, the laser power has greater effect on phase noise beyond 1kHz frequency offset .The result is helpful for improving phase noise of photoelectric oscillator .%为了改善光电振荡器相位噪声特性、提高光电振荡器性能,采用理论分析和实验验证的方法,研究了激光器线宽、光功率与光电振荡器相位噪声之间的关系。测试了激光器在功率相等、线宽不等情况下,光电振荡器所产生的微波信号的频谱特性和相位噪声特性;测试了给定线宽激光器在不等功率情况下,所产生的微波信号的相位噪声特性。结果表明,激光器线宽越窄、光功率越大,光电振荡器产生微波信号的频谱特性和相位噪声特性就越好;在频偏1 kHz以外,相位噪声受激光器线宽影响较小,受光功率影响较大。这一结果对改善光电振荡器相位噪声有一定的帮助。
    • 徐一清; 吕卫君; 周国泉; 戴朝卿
    • 摘要: Based on a WGD -6 optical multichannel analyzer and a TS -100A fiber spectrometer,two kinds of experiment systems were designed to test the optical properties of 5 kinds of different colors LED (such as red,yellow,green,blue and violet),including the wavelength,the coherent length and the spectral linewidth of LED light source.The results show that the measured LED spectral power distribution approximates to Gaussian distribution and it is a typical narrow spectrum.The half -intensity width of 5 kinds LED is all less than or equal to 36.47 nm,so the LED’s spectral purity is good.The half -intensity width of green light LED is the largest and the violet light LED’s is minimum,so the mono =chromaticity of violet light is the best.The measurement results of the two meth-ods show that they are in agreement and the test data is nominal with manufacturer.%文中设计了 LED 光源谱线宽度测试实验。利用 WGD -6型光学多道分析仪和 TS -100A 光纤光谱仪两套实验装置对红、黄、绿、蓝、紫等5种不同颜色 LED 光源的波长、相干长度和谱线宽度作了对比性测量。实验结果表明,LED 光谱功率分布近于高斯分布,是很好的窄带光谱;5种单色 LED 光谱的半强度宽度均≤36.47 nm,光谱纯度较好,其中绿光 LED的半强度宽度最大,紫光 LED 的半强度宽度最小,表明紫光的单色性最好。两种测试方法的结果是相吻合的,与厂家标称值基本一致。
    • 苏亮; 尚国庆; 吴群勇; 肖韶荣
    • 摘要: 设计了L ED光源谱线宽度测试实验,利用迈克耳孙干涉仪、L ED光谱测试系统2套实验装置对L ED光源的波长、相干长度和谱线宽度作了对比性测量。%By using Michelson interferometer and LED spectral test system ,the wavelength ,the coherent length ,the spectral linewidth of LED light source were tested .
    • 李庆萌; 张军海; 曾宪金; 黄强; 孙伟民
    • 摘要: In order to study the effect of the geomagnetic field on cesium magnetometer sensitivity , the Breit-Rabi e-quation is used to analyze the Zeeman splitting of the Fg=4 level of Cs atoms.The emphasis is on the analysis of the nonlinear Zeeman effect on the resonant hyperfine spectrum of the all-optical atomic magnetometer in the geo-magnetic field which is about 0.05 mT.The results show that the effect would cause the line-width to increase from 20 Hz to 53 Hz, and the amplitude to decrease by relatively 50%.If any accessional noise is not taken into ac-count, our cesium magnetometer sensitivity will deteriorate from 0.3 pT/Hz1/2 to 1.6 pT/Hz1/2.That showed a tech-nical bottleneck of improving atomic magnetometer sensitivity in the geomagnetic field .A new technique of pumping from Fg=4 to Fe=4 is proposed to break through this bottleneck .%为了研究地磁场对铯原子磁力仪灵敏度的影响,利用Breit-Rabi方程对Cs原子基态Fg=4能级的塞曼分裂进行了理论分析;并重点讨论了在磁场强度约为0.05 mT的地磁场中,铯原子基态超精细结构的非线性塞曼效应对原子磁力仪共振谱线的影响.结果显示非线性塞曼效应使共振谱线宽度由20 Hz变为53 Hz,相对幅值衰减50%左右,在不考虑引入额外系统噪声的前提下,磁测灵敏度将由微弱磁场条件下的0.3 pT/Hz1/2蜕化为1.6 pT/Hz1/2,由此得出地磁场下提高原子磁力仪灵敏度的技术瓶颈所在,提出将泵浦光频率改为Fg=4→Fe=4跃迁来突破这一瓶颈的技术方案.
    • 施水军; 韩秋漪; 张善端
    • 摘要: The voltage,current and power are measured for short arc ultra-high pressure mercury lamps(UHP) with a rated power of 250W driven by 50Hz square waveform power supply.It is found that the curve slope of voltage-current characteristics is positive in most of the power range,and negative around 170W.The photometric,colorimetric and electric parameters are measured with an integrating sphere system coupled with a spectrometer in the UHP dimming experiments.The results show luminous flux increases with power linearly.The luminous efficacy and color rendering index(CRI) reduce with power reduction because of the decrease of spectral continuum.The mercury pressure are calculated with the full width at the half maximum of 546nm spectral band,which is 6.2~11.0nm.The pressure range from 15.3 to 25.8MPa corresponding to the UHP power from 43 to 258 Watts.%测量了50Hz方波电源驱动的投影用250W短弧超高压汞灯(UHP)的电压、电流和功率,发现UHP总体上具有正的伏安特性,但调光至170W左右会出现负的伏安特性。另外用积分球和光谱仪系统测量了调光过程中UHP的光色电参数,结果表明,光通量随功率线性变化;调光后由于连续谱成分减少,导致光效、显色指数降低。利用546nm谱带宽度计算出UHP在43~258W功率范围内的汞蒸气压为15.3~25.8MPa。
    • 董丽芳; 吕英辉; 陈俊英; 范伟丽; 嵇亚飞
    • 摘要: 在狭缝微等离子体中,研究了Ar Ⅰ(2P2→1S5)光谱线的展宽和频移随放电参数的变化.为了测量谱线频移,采用低气压(10 Pa左右)氩气放电发射的Ar Ⅰ光谱线作为参考线.实验在氩气含量为99.92%的氩气/空气放电中,测量了气压从1×104Pa增大到6×104 Pa时Ar Ⅰ谱线的频移和展宽.结果表明随着气压的升高,Ar Ⅰ谱线的展宽和频移均线性增大,说明电子密度随着气压的升高而增大.实验还研究了放电气隙间距为100及300μm时,Ar Ⅰ发射谱线的频移及展宽的变化,结果发现随着放电气隙间距的增加,谱线的频移及展宽均增加,表明电子密度随着放电气隙间距的增大而升高.%The variations of width and shift of Ar I (2P2→IS5) spectral line with discharge parameters were studied in a slot microplasma. In order to measure the wavelength shift, the Ar I (2P2→IS5) spectral line emitted from argon discharge at pressure of 10 Pa was used as a reference line. With the gas pressure increasing in the range of 1 × l04 ~6× 104 Pa, the width and shift of Ar I (2P2→lS5) spectral line were measured in argon (99. 92%)/air discharge. It was found that both the width and the shift of Ar I (2P2→1S5) spectral line increase linearly with the increase in gas pressure, indicating that the electron density increases with the increase in gas pressure. In addition, the width and the shift of Ar I (2P2→IS5) spectral line at gas gap width of 100 and 300 μm were measured for comparison. It was found that both increase with the increase in gas gap width,which indicates that the electron density in the slot microplasma increases with the increase in gas gap width.
    • 张永春
    • 摘要: 光谱分析仪器的实际分辨率受诸多因素的影响,理论上根据瑞利判据认为可分辨的两个谱线,实际中往往并不能有效分辨.对于WGD--8A型光栅光谱仪来说,考虑入射狭缝宽度、衍射宽度等因素的影响,推导出它的实际分辨率,并利用WGD--8A型光栅光谱仪测量钠原子光谱.分析其所属线系,绘制部分能级图.
    • 邱隆清; 张懿; 谢晓明
    • 摘要: 采用一高温超导射频量子干涉器 (HTS rf - SQUID) 作为信号探测器件,研究了多种液体样品的低场核磁共振信号.通过改变测量场(简称Bm)的大小,可以探测到质子拉莫频率(简称fL)从2Hz到40kHz的信号.由于在低场核磁共振中,Bm的均匀性能很好的得到满足,因而可能得到很窄的谱线宽度.实验发现,对自来水样品,在7μT以下均可接近谱线的自然宽度.同时,在低场核磁共振条件下,样品的化学位移很小以至于消失,因而可以研究"纯"的异核间的自旋耦合谱.
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