Non-Selective Standard Indicator for the Average Power of Laser Radiation

A technical solution for the average power laser radiation standard applied to the ultraviolet range is suggested and characteristics of the standard are provided.__________Translated from Izmeritelnaya Tekhnika, No. 2, pp. 32–35, February, 2005.     

Assurance of the Uniformity of Measurements of Energy of Short-Pulse Coherent Radiation

Ways of creating unified automatized reference (calibration) and standard measurement equipment for the purpose of developing a subsystem for the assurance of the uniformity of measurements of the energy of short-pulse laser radiation are considered. __________ Translated from Izmeritel'naya Tekhnika, No. 11, pp. 24–28, November, 2005.     

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.     

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.     

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.     

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.     

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.     

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.     

Precision standard calorimeters for reproduction and dissemination of the units of energy and mean power of optical emission

Problems associated with efforts to increase the precision of thermal measurements of the energy parameters of laser emission are considered, and principles of construction and technologies for precision standard calorimetric transducers are proposed. __________ Translated from Izmeritel’naya Tekhnika, No. 6, pp. 26–30, May, 2007.     

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.     

Ensuring the Uniformity of Measurements of Spatial-Energy Characteristics of Pulsed Laser Radiation

Measurement Techniques - The structure and principle of creation of a standard for the spatial-power characteristics of pulsed laser radiation are examined, and problems solved with its aid are...     

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 Uniformity of Measurements of Radiant Flux and Irradiance in the Range of Wavelengths 0.03–0.40 µm

A state primary standard of the units of radiation flux and irradiance in the range of wavelengths 0.03– 0.40 µm and working standards of continuous and pulse ultraviolet radiation are developed.__________Translated from Izmeritel’naya Tekhnika, No. 5, pp. 27–31, May, 2005.     

Use of calorimeters with receiver elements of recrystallized graphites for measurements of the energy parameters of the radiation of eximer lasers

Methods of testing energy converters and the mean power of the radiation of eximer lasers are considered.Translated from Izmeritelnaya Tekhnika, No. 11, pp. 27–30, November, 2004.     

A Radiometer for Precision Coherent Radiation Measurements

A radiometer has been designed for precision colierent radiation measurements and tested for long-term repeatability at wavelengths of 488 and 633 nm. The radiometer consists of a pn silicon photodiode maintained in a nitrogen atmosphere with a quartz window designed to eliminate interference problems. Ratio measurements between the radiometer and an absolute type detector were made over a period of 215 d. At 0.5 mW, the standard deviations were 0.008% and 0.009% at 488 and 633 nm, respectively. The maximum deviations from the mean were 0.016% and 0.015% at the respective wavelengths. Measurements were also made on the radiometer with respect to angular and spatial uniformity and linearity. The high precision, simplicity, and portability of the radiometer suggest it for use as a transfer standard for radiometric measurements.     

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.     

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.     

A Means of Increasing the Calibration Precision of Wide-Aperture Devices for Measurement of the Energy Parameters of Laser Radiation

Problems related to attempting to achieve high precision in absolute measurements of the energy and mean power of wide beams of laser radiation are considered. __________ Translated from Izmeritel'naya Tekhnika, No. 7, pp. 25–28, July, 2005.