Application of hybrid design method to VUV double-element optical systems equipped with holographic gratings recorded with aspheric wavefronts

1997 ◽  
Author(s):  
Masato Koike ◽  
Yoshihiro Ueno ◽  
Takeshi Namioka
Keyword(s):  
Design Method ◽  
Optical Systems ◽  
Hybrid Design ◽  
Holographic Gratings

scholarly journals Nano-imprinted subwavelength gratings as polarizing beamsplitters

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Julian Wüster ◽  
Yannick Bourgin ◽  
Patrick Feßer ◽  
Arne Behrens ◽  
Stefan Sinzinger
Keyword(s):  
Nanoimprint Lithography ◽  
Optical Measurement ◽  
Design Method ◽  
Optical Systems ◽  
Surface Metrology ◽  
Measurement Systems ◽  
Common Path ◽  
Dielectric Coatings ◽  
Subwavelength Gratings ◽  
Wide Range

AbstractPolarizing beamsplitters have numerous applications in optical systems, such as systems for freeform surface metrology. They are classically manufactured from birefringent materials or with stacks of dielectric coatings. We present a binary subwavelength-structured form-birefringent diffraction grating, which acts as a polarizing beamsplitter for a wide range of incidence angles −30∘…+30∘. We refine the general design method for such hybrid gratings. We furthermore demonstrate the manufacturing steps with Soft-UV-Nanoimprint-Lithography, as well as the experimental verification, that the structure reliably acts as a polarizing beamsplitter. The experimental results show a contrast in efficiency for TE- and TM-polarization of up to 1:18 in the first order, and 34:1 in the zeroth order. The grating potentially enables us to realize integrated compact optical measurement systems, such as common-path interferometers.

Hybrid design method for dead-beat regulators†

1970 ◽  
Vol 11 (6) ◽  
pp. 987-1003 ◽  
Author(s):  
SERGE GIRAUD ◽  
MARCEL NOUGARET
Keyword(s):  
Design Method ◽  
Hybrid Design

The Application of Hybrid Design Method in Car Body Design

2012 ◽  
Vol 192 ◽  
pp. 455-459
Author(s):  
Shi Yuan Hou
Keyword(s):  
Design Process ◽  
Process Design ◽  
Design Method ◽  
Free Form ◽  
Hybrid Design ◽  
Efficient Design ◽  
Form Complex ◽  
Car Body ◽  
Body Design ◽  
Simple Features

Reverse design and forward design have their strong points each other. The advantages of reverse design lie in the treatment of free-form complex modeling, while forward design is good in modeling in simpler feature. The car body often contains complex curved surface and some simple features. Through a single reverse or forward design can’t realize the efficient design. In order to combine advantages of reverse and forward design, using the hybrid design process design can improve the efficiency of the development of car body.

New design method for athermalized optical systems

1992 ◽  
Author(s):  
Yasuhisa Tamagawa ◽  
Satoshi Wakabayashi ◽  
Toru Tajime
Keyword(s):  
Design Method ◽  
Optical Systems

scholarly journals Recording of high efficiency volume Bragg gratings in a photopolymer using diffraction from very weak pre-recorded gratings

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Dennis Bade ◽  
Izabela Naydenova ◽  
Vincent Toal ◽  
Suzanne Martin
Keyword(s):  
Data Storage ◽  
Diffraction Efficiency ◽  
High Efficiency ◽  
Strong Dependence ◽  
Optical Systems ◽  
Second Step ◽  
Holographic Gratings ◽  
Single Beam ◽  
High Diffraction Efficiency ◽  
High Diffraction

AbstractA two-step method of writing high diffraction efficiency holographic gratings in photopolymer using just one writing beam during the second step is discussed. The technique is based on the use of weak gratings (<1%) recorded during a first step which during the second step are illuminated with a single beam to form strong highly efficient holographic gratings. The weak grating provides a second interfering beam by diffracting a small portion of the illuminating light. Although effects such as beam pumping and twowave mixing arewell known in dynamic re-writable recording media such as photorefractives, the ability to write with one beam, or ‘pump’ gratings is not usually observed in photopolymer materials. Other methods of recording with a single beam have been reported, especially for data storage, but they use compact optical systems, polarization effects or lenticular devices to produce the required second beam. In this method, the second beam is produced within the photopolymer medium. Earlierwork by the authors reported increases in efficiency of weak photopolymer gratings illuminated by a single exposure beam, and more recently evidence was presented that diffraction at the weak pre-recorded grating was responsible for this effect. Here we demonstrate a strong dependence of the diffraction efficiency on grating thickness and show that the method allows the writing of high diffraction efficiency gratings in adverse conditions using a single beam. The possibility of angular multiplexing is also demonstrated. The technique may find application in writing information using pre-recorded weak holographic gratings and, potentially, in other data storage applications. In this paper it is shown that multiple new gratings can be writtenwhich are angularly separated and distinct from the pre-written grating and it is also possible to choose one grating from among a number of pre-written gratings and selectively amplify it without amplifying the others.

Classical Control — A Hybrid Design Method by Inspection

1996 ◽  
Vol 33 (2) ◽  
pp. 134-156
Author(s):  
S. M. I. Lidgey
Keyword(s):  
Linear Time ◽  
Design Method ◽  
Simple Procedure ◽  
Step Response ◽  
Hybrid Design ◽  
Peak Time ◽  
Third Order ◽  
Linear Time Invariant ◽  
Classical Control ◽  
Time Invariant

Classical control – a hybrid design method by inspection This article describes a method whereby most linear time – invariant SISO control systems dominated by no more than three time constants can be designed by a simple procedure, refined if necessary by empirical formulae. In many cases specifying the initial peak time of a classical third order step response is sufficient.

A Hybrid Design Method for Thin-Panel Transmitarray Antennas

2019 ◽  
Vol 67 (10) ◽  
pp. 6473-6483 ◽  
Author(s):  
Qi Luo ◽  
Steven Gao ◽  
Mohammed Sobhy ◽  
Xuexia Yang ◽  
Zhi-Qun Cheng ◽  
...  
Keyword(s):  
Design Method ◽  
Hybrid Design ◽  
Thin Panel
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