Application of Laserstar Power Meter for Determination of the Stability of Laser Radiation Power

The potential for the use of the Laserstar power meter for the determination of the stability of laser radiation power is considered. A relation is established between the discreteness of the reader and the resolution in the determination of the stability of laser power. Examples illustrating the determination of the stability of the radiating power of certain lasers are presented.     

激光中功率基准装置的改造

描述了改造后的激光中功率基准装置的原理、结构、性能和不确定度评定     

Assurance of the Uniformity of Measurements of the Power of Laser Radiation

On the basis of an analysis of the principle underlying the construction of standards and systems designed for reproduction of the unit of mean power and energy of laser radiation, it is shown that these standards consist of unified subsystems that carry the principal metrological load. By means of such a division, it is possible to realize a systems-engineering synthesis of standards with preassigned error. __________ Translated from Izmeritel'naya Tekhnika, No. 11, pp. 20–23, November, 2005.     

Influence of a Jump in the Power of Laser Radiation on Its Measurement

Simulation and investigation of the effect of an isolated jump on realization of the unit of power of laser radiation and dissemination of the size of the unit are considered. Results are obtained by means of a newly developed algorithm that characterizes the behavior of the mean value of a signal and the standard deviation of a system as functions of the parameters of a jump in the power of laser radiation and the length and amplitude of the jump. If information concerning the time when a jump occurs is available, the proposed algorithm makes it possible to take into account how a jump affects the ultimate result of a measurement.     

Techniques for Analysis of the Influence of a Power Jump on the End Result of the Realization of the Unit of Laser Radiation Power

Two techniques based on modeling of the measurement process of the system measuring transducer – digital voltmeter are proposed.     

Method of Extending the Dynamic Range of the Secondary Standard of the Units of Mean Power and Energy of Laser Radiation

A method of extending the dynamic range of the secondary standard of the units of the mean power and energy of laser radiation into the low-level region is considered. A technique of calculating the optimal transmission coefficients for a set of attenuators is developed.     

Mathematical Simulation of Radiation Instability and a Possible Method of Taking Instability into Account in Realization of the Unit of Power of Laser Radiation and Dissemination of the Unit of Power

The present study is devoted to mathematical simulation of the instability of laser radiation. An algorithm for establishing the shape of continuous laser radiation received at the input of a measuring system is presented.     

System for Monitoring the Spatial Energy Distribution of Laser Radiation Utilizing an IBM-Type Personal Computer

The results are presented of the development of set of basic circuits providing for the thermostatting of the heat-sensitive layer of a multielement receiver utilizing VO₂, the readout and measurement of information in the plane of a multielement laser radiation receiver, and the interfacing of the receiver with an IBM PC/AT personal computer.     

Method of Reducing the Error of Transferring the Size of a Unit of Laser Radiation Energy

A method is considered of reducing the error of transferring the size of a unit of laser radiation energy for a secondary standard of the units of average power and energy of laser radiation by using the readings of a relative-level sensor. A procedure is developed for processing the readings of this sensor.     

Coupling of Josephson Radiation to Voltage Standard Arrays

We coupled the radiation emitted by arrays of Josephson junctions oscillators to detector arrays of small Josephson junctions. The number of junctions in the detector array ranges up to 1536, which is typical for a 1V standard array operation. Evidence is presented that both uniform coupling of the emitted radiation over all the small junctions arrays and coherent emission of the Josephson oscillators can be achieved. PACS numbers: 74.50. + r, 74.40. + k.     

激光推进技术标准体系建设研究

本文总结了激光推进技术的主要特点和未来前景,梳理了当前技术领域中存在的问题,论述了建立激光推进技术标准体系的作用和意义。针对需求分析,初步构建了激光推进技术标准体系框架,对标准体系的主要内容进行了概括和分析,提出了建立我国激光推进技术标准体系的设想。     

The state primary standard for the unit of mean laser power

An upgraded state primary standard is considered for the unit of mean laser radiation power. The technical characteristics and working principle are given. __________ Translated from Izmeritel’naya Tekhnika, No. 7, pp. 3–6, July, 2007.     

Consideration of the Effect of Instability of the Laser Emission Power on the Final Result of the Reproduction of the Unit of Mean Laser Emission Power and the Transmission of Its Dimensions

An algorithm for reconstructing the form of continuous laser emission at the input of a system for measuring the standard of the unit of mean laser power is presented. The power can also be calculated using this algorithm.     

Reproduction and Dissemination of the Units of Radiation Flux and Irradiance Using Standard Ultraviolet Radiation Detectors

Features typical of the use of standard detectors of ultraviolet radiation and the basic problems that arise in the construction of a scale of radiation flux and illuminance in the region of vacuum and near ultraviolet radiation are considered. The principal results and new trends in the design of an ultraviolet radiometric scale using standard ultraviolet radiation detectors in research carried out at national metrological institutes are described.Translated from Izmeritel’naya Tekhnika, No. 3, pp. 20–23, March, 2005.     

Standard Receivers for Ultraviolet Radiation

Primary standard receivers in the spectral band 30–400 nm based on the use of an ionization chamber and Golay pneumatic detector are developed. Sources of pulse and continuous radiation are used to generate the flux of ultraviolet radiation.__________Translated from Izmeritel’naya Tekhnika, No. 4, pp. 34–36, April, 2005.     

基于滑动滤波技术的激光陀螺评价方法

激光陀螺是一种以量化脉冲的形式输出角增量的数字传感器,量化误差如同白噪声一样影响着激光陀螺的测试精度。为了准确评价激光陀螺的性能,减少量化误差对激光陀螺测试数据的影响,本文应用滑动滤波技术对激光陀螺采样数据进行滤波处理,理论分析及实验结果表明,该方法有效地降低了量化噪声从而实现了对激光陀螺的准确评价。