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distribution is defined by the etching profile within the unit period, which can involve many (not less than two) etching transitions of varying duty cycles.
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pattern is roughly on the order of the wavelength of light in the application, with an adjustment factor related to the substrate's index of refraction. The
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In a 1-dimensional diffractive beam splitter, the diffractive pattern is linear, while a 2-dimensional element will have a complex pattern.
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Digital diffractive optics: an introduction to planar diffractive optics and related technology, Bernard C. Kress, Patrick
Meyrueis , 2005.
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pattern is composed of "periods" – identical sub-pattern units that repeat cyclically. The width d of the
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Diffraction
Gratings and Applications, Loewen, Erwin C. and Popov, Evgeny. Marcel Dekker, Inc. 1997.
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Diffractive Optics – Design, Fabrication and Test, O'Shea, Suleski, Kathman and
Prather, 2004. p.83
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determines the direction of the output beams, it does not determine the distribution of
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spots on a plane at a given distance from the lens, called the "working distance". The
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can generate either a 1-dimensional beam array (1xN) or a 2-dimensional beam
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is related to the separation angle θ between output beams according to the
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Periodic etch patterns on a)19x19 diff. beam splitter and b)1x31 splitter.
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retains the same optical characteristics as the input beam, such as size,
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output simply being the undiffracted continuation of the input beam.
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spots. This simple optical set-up is used in a variety of high-power
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between the beams, determines the separation distance between the
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Video.Light propagation simulation through diffractive splitter
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research and industrial applications that typically include:
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Video presenting diffractive beam splitter developing. IFTA
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7x7 matrix using green laser and diffractive beam splitter.
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Fractional Laser Skin
Treatment Using Diffractive Optics
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for a beam splitter follows the same principle as a
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104:so that the output beam array becomes an array of
96:Normally, a diffractive beam splitter is used in
403:OPTICAL DESIGNS FOR ZERO ORDER REDUCTION(patent)
174:Medical/aesthetic applications (skin treatment)
318:For information on manufacturing process, see
72:. The diffractive beam splitter is used with
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160:Beam sampling (Power monitoring and control)
274:{\displaystyle d\sin \theta _{m}=m\lambda }
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193:The theory of operation is based on the
44:into multiple output beams. Each output
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80:, and is designed for a specific
429:HOLOOR Diffractive beam-splitter
112:of the lens, together with the
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289:represents the order of the
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26:diffractive beam splitter
64:(MxN), depending on the
30:multispot beam generator
308:among those beams. The
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88:between output beams.
40:that divides an input
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34:array beam generator
215:diffraction grating
211:diffractive pattern
86:angle of separation
74:monochromatic light
66:diffractive pattern
454:Optical components
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203:Huygens' Principle
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209:). Designing the
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302:grating equation
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189:Design principle
114:separation angle
56:. A diffractive
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38:optical element
28:(also known as
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423:External links
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387:. Retrieved
380:the original
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145:LCD displays
141:Glass dicing
110:focal length
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92:Applications
50:polarization
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459:Diffraction
320:lithography
293:, with the
207:Diffraction
151:Perforation
135:solar cells
448:Categories
389:2011-08-30
326:References
300:While the
295:zero order
205:(See also
197:nature of
82:wavelength
78:laser beam
76:such as a
269:λ
254:θ
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223:etching
219:etching
169:Example
118:focused
106:focused
100:with a
70:element
68:on the
227:period
98:tandem
62:matrix
383:(PDF)
376:(PDF)
310:power
199:light
122:laser
54:phase
201:and
195:wave
163:3-D
84:and
52:and
46:beam
42:beam
24:The
247:sin
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32:or
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286:m
266:m
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258:m
244:d
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
