SU1697041A1 - Device for gauss beam focusing in a rectangle with uniformity of intensity distribution - Google Patents

Device for gauss beam focusing in a rectangle with uniformity of intensity distribution Download PDF

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Publication number
SU1697041A1
SU1697041A1 SU904795268A SU4795268A SU1697041A1 SU 1697041 A1 SU1697041 A1 SU 1697041A1 SU 904795268 A SU904795268 A SU 904795268A SU 4795268 A SU4795268 A SU 4795268A SU 1697041 A1 SU1697041 A1 SU 1697041A1
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SU
USSR - Soviet Union
Prior art keywords
optical element
rectangle
intensity distribution
microrelief
uniformity
Prior art date
Application number
SU904795268A
Other languages
Russian (ru)
Inventor
Михаил Аронович Голуб
Леонид Леонидович Досколович
Иосиф Норайрович Сисакян
Виктор Александрович Сойфер
Сергей Иванович Харитонов
Виктор Анатольевич Данилов
Original Assignee
Центральное Конструкторское Бюро Уникального Приборостроения Научно-Технического Объединения Ан Ссср
Самарский авиационный институт им.С.П.Королева
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Application filed by Центральное Конструкторское Бюро Уникального Приборостроения Научно-Технического Объединения Ан Ссср, Самарский авиационный институт им.С.П.Королева filed Critical Центральное Конструкторское Бюро Уникального Приборостроения Научно-Технического Объединения Ан Ссср
Priority to SU4795268K priority Critical patent/SU1697042A1/en
Priority to SU904795268A priority patent/SU1697041A1/en
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Publication of SU1697041A1 publication Critical patent/SU1697041A1/en

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Abstract

Изобретение относитс  к оптике и может быть испольэозано в установках, предназначенных дл  освещени  или обработки различного рода изделий пучками сконцентрированного лазерного излучени , Цель изобретени  - повышение равномерности распределени  интенсивности в фокусируемом пр моугольнике. Устройство выполнено в виде фазового оптического элемента 1 - отражающей зонной пластинки с микрорельефом 2. Приведено соотношение дл  определени  высоты микрорельефа зон пластинки, обеспечивающее повышение равномерности распределени  интенсивности в фокусируемом пр моугольнике. 2 ил. (ЛThe invention relates to optics and can be used in installations intended to illuminate or process various kinds of products with concentrated laser beams. The purpose of the invention is to increase the uniformity of the intensity distribution in a focused rectangle. The device is made in the form of a phase optical element 1 — a reflective zone plate with microrelief 2. A correlation is given for determining the height of the microrelief of the plate zones, ensuring an increase in the uniformity of the intensity distribution in the focused rectangle. 2 Il. (L

Description

Фиг,FIG

.2.2

Claims (2)

Формула изобретенияClaim Устройство для фокусировки гауссова пучка в прямоугольник с равномерным распределением интенсивности, выполненное в виде фазового оптического элемента зонной пластинки с микрорельефом, отличающееся тем, чго, с целью повышения равномерности распределения интенсивности в фокусируемом прямоугольнике, пластинка выпс тена пропускающей, а высота h(Up, Vp) микрорельефа ее зон определяется соотношением где Up, Vp - декартовы координаты в плоскости оптического элемента;A device for focusing a Gaussian beam into a rectangle with a uniform intensity distribution, made in the form of a phase optical element of a zone plate with a microrelief, characterized in that, in order to increase the uniformity of the intensity distribution in the focused rectangle, the plate is let out transmissive, and the height h (Up, V p ) the microrelief of its zones is determined by the relation where Up, Vp are the Cartesian coordinates in the plane of the optical element; Л-длина волны падающего монохроматического излучения;L-wavelength of incident monochromatic radiation; η - показатель преломления материала, образующего микрорельеф;η is the refractive index of the material forming the microrelief; По - показатель преломления окружающей среды;Po is the refractive index of the environment; Θ - угол между оптической осью устройства и нормалью к плоскости оптического элемента;Θ is the angle between the optical axis of the device and the normal to the plane of the optical element; πιοάπιλ (х) - функция, равная наименьшему положительному остатку от деления х на m Л;πιοάπιλ (x) is the function equal to the smallest positive remainder from dividing x by m A; ni - заданное целое число;ni is the given integer; f - заданное фокусное, расстояние опти- 5 ческого элемента;f is the specified focal length, the distance of the optical element 5; σ- параметр гауссова пучка;σ is the parameter of the Gaussian beam; erf (х) = — } е dt.erf (x) = -} e dt. оabout 2d - размер стороны оптического элемента;2d is the side size of the optical element; 2а. 2Ь - заданные размеры сторон фокусируемого прямоугольника.2a. 2b - the specified dimensions of the sides of the focused rectangle. Фиг. 2FIG. 2 Корректор В.ГирнякProofreader V. Girnyak ПодписноеSubscription ...... Г * наб., 4/5...... G * nab., 4/5
SU904795268A 1990-02-23 1990-02-23 Device for gauss beam focusing in a rectangle with uniformity of intensity distribution SU1697041A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SU4795268K SU1697042A1 (en) 1990-02-23 1990-02-23 Device for focussing of gaussian beam in rectangle with uniform distribution of intensity
SU904795268A SU1697041A1 (en) 1990-02-23 1990-02-23 Device for gauss beam focusing in a rectangle with uniformity of intensity distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU904795268A SU1697041A1 (en) 1990-02-23 1990-02-23 Device for gauss beam focusing in a rectangle with uniformity of intensity distribution

Publications (1)

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SU1697041A1 true SU1697041A1 (en) 1991-12-07

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SU4795268K SU1697042A1 (en) 1990-02-23 1990-02-23 Device for focussing of gaussian beam in rectangle with uniform distribution of intensity

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995018984A1 (en) * 1994-01-07 1995-07-13 Coherent, Inc. Apparatus for creating a square or rectangular laser beam with a uniform intensity profile
WO2011081553A1 (en) * 2009-12-29 2011-07-07 Schetnikov Anatoly Alekseevich Method for focusing an axisymmetrical radiation flow generated by a wave-type source and optical system for implementing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995018984A1 (en) * 1994-01-07 1995-07-13 Coherent, Inc. Apparatus for creating a square or rectangular laser beam with a uniform intensity profile
WO2011081553A1 (en) * 2009-12-29 2011-07-07 Schetnikov Anatoly Alekseevich Method for focusing an axisymmetrical radiation flow generated by a wave-type source and optical system for implementing same

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Publication number Publication date
SU1697042A1 (en) 1991-12-07

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