SU436987A1 - Device for measuring the angular fluctuations of optical radiation - Google Patents

Device for measuring the angular fluctuations of optical radiation

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Publication number
SU436987A1
SU436987A1 SU1660084A SU1660084A SU436987A1 SU 436987 A1 SU436987 A1 SU 436987A1 SU 1660084 A SU1660084 A SU 1660084A SU 1660084 A SU1660084 A SU 1660084A SU 436987 A1 SU436987 A1 SU 436987A1
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SU
USSR - Soviet Union
Prior art keywords
optical radiation
measuring
fluctuations
angular fluctuations
angular
Prior art date
Application number
SU1660084A
Other languages
Russian (ru)
Inventor
Владимир Анатольевич Кудряшов
Игорь Николаевич Матвеев
Станислав Михайлович Пшеничников
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to SU1660084A priority Critical patent/SU436987A1/en
Application granted granted Critical
Publication of SU436987A1 publication Critical patent/SU436987A1/en

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Description

1one

Предлагаемое изобретение касаетс  квантовой электроники и может быть иснользовано дл  измерений флюктуации оптического излучени  по углу, например при исследовании стабильности направлени  излучени  непрерывных и импульсных ОКГ, при исследовании флюктуации, вносимых средой (например атмосферой ) в оптическое излучение и т. д.The present invention relates to quantum electronics and can be used to measure fluctuations of optical radiation angle, for example, to study the stability of the direction of radiation of continuous and pulsed laser, to study the fluctuations introduced by the medium (for example, atmosphere) into optical radiation, etc.

Известно устройство дл  измерени  угловых флюктуации оптического излучени , например прибор, состо щий из фокусирующей линзы, фотодетектора, располагаемого в фокальной плоскости линзы, усилител  и регистрирующего блока. Принцип действи  прибора основан на зависимости амплитудного распределени  мощности в фокальной плоскости линзы от угла прихода оптического излучени  P{X,if) (где X - координата точки фокальной плоскости относительно главного фокуса, ф--угловые флюктуации оптического излучени  относительно оптической оси линзы ).A device for measuring angular fluctuations of optical radiation is known, for example, a device consisting of a focusing lens, a photodetector disposed in the focal plane of the lens, an amplifier and a recording unit. The principle of operation of the device is based on the dependence of the amplitude power distribution in the focal plane of the lens on the angle of arrival of optical radiation P {X, if) (where X is the coordinate point of the focal plane relative to the main focus, f is the angular fluctuations of optical radiation relative to the optical axis of the lens).

В точке на склоне главного максимума функции Р(Х, ср) флюктуации ср() преобразуютс  в флюктуации мощности в соответдРAt a point on the slope of the main maximum of the function P (X, sr), the fluctuations cp () are converted into power fluctuations in the corresponding P

ствии с соотношением (/). Приwith the ratio (/). With

- - .. дустановке в этой точке-фотодетектора на его - - .. installation at this photodetector point on its

выходе по витс  переменна  составл юща , пропорциональна  угловым флюктуаци м.The output according to Wits is variable, proportional to the angular fluctuations.

В дальнейшем измерение угловых флюктуации сводитс  к измерению И.Further measurement of angular fluctuations is reduced to measurement I.

Однако известное устройство дл  измерени  угловых флюктзаций оптического излучени  характеризуетс  вли нием на результаты измерений распределени  пол  луча в плоскости , перпендикул рной его распространению. Это вытекает из зависимости величиныHowever, the known device for measuring the angular fluctuations of optical radiation is characterized by an influence on the measurement results of the distribution of the beam field in a plane perpendicular to its propagation. This follows from the dependence of the magnitude

ap(x,f) V ,ap (x, f) v,

---- А.л, от вида апертурнои функции,---- A.L, on the type of aperture function,

OfOf

поскольку Р(Х,ц))-есть преобразование Фурье от этой функции; например, дл  равномерного и Гауссова распределений крутизны преобразований отличаютс  в 2 раза, т. е. погрешность достигает 100%.since P (X, n)) is the Fourier transform of this function; for example, for the uniform and Gaussian distributions of the steepness of the transformations differ by a factor of 2, i.e., the error reaches 100%.

Цель предлагаемого изобретени  - исключить вли ние распределени  пол  луча в плоскости , перпендикул рной направлению его распространени , на результаты измерений.The purpose of the present invention is to eliminate the effect of the distribution of the beam field in a plane perpendicular to the direction of its propagation on the measurement results.

Это достигаетс  тем, что перед фотодетектором установлен оптико-акустический преобразователь , состо щий из анизотропного оптико-акустического кристалла, двух электроакустических преобразователей с генераторами накачки, и пол роид.This is achieved by installing an optoacoustic transducer in front of the photodetector, consisting of an anisotropic optoacoustic crystal, two electroacoustic transducers with pump generators, and a polaroid.

. Предлагаемое устройство состоит из следующих основных элементов и узлов: анизо. The proposed device consists of the following main elements and components: aniso

SU1660084A 1971-05-21 1971-05-21 Device for measuring the angular fluctuations of optical radiation SU436987A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1660084A SU436987A1 (en) 1971-05-21 1971-05-21 Device for measuring the angular fluctuations of optical radiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1660084A SU436987A1 (en) 1971-05-21 1971-05-21 Device for measuring the angular fluctuations of optical radiation

Publications (1)

Publication Number Publication Date
SU436987A1 true SU436987A1 (en) 1974-07-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1660084A SU436987A1 (en) 1971-05-21 1971-05-21 Device for measuring the angular fluctuations of optical radiation

Country Status (1)

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SU (1) SU436987A1 (en)

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