Optical design method for controlling laser beam profiles

1994 ◽  
Author(s):  
Burton D. O'Neil ◽  
Vance A. Hedin ◽  
Carol E. Hines
Keyword(s):  
Laser Beam ◽  
Design Method ◽  
Optical Design

Optical Design Method of a Spectrometer for Spectral Domain Optical Coherence Tomography

2018 ◽  
Vol 68 (5) ◽  
pp. 570-577
Author(s):  
Seung Seok LEE ◽  
Da Wum KWON ◽  
Eun Seo CHOI* ◽  
Woosub SONG
Keyword(s):  
Optical Coherence Tomography ◽  
Design Method ◽  
Optical Design ◽  
Spectral Domain ◽  
Optical Coherence

Optical Design of CO2 Laser Beam Expanding System with High Variable Expanding Ratio

2015 ◽  
Vol 35 (s2) ◽  
pp. s222002
Author(s):  
姜波 Jiang Bo ◽  
吴越豪 Wu Yuehao ◽  
戴世勋 Dai Shixun ◽  
聂秋华 Nie Qiuhua
Keyword(s):  
Laser Beam ◽  
Co2 Laser ◽  
Optical Design

A New Optical Design Method of Uniform Illumination Based on Extended LED Source

2014 ◽  
Vol 51 (2) ◽  
pp. 022203
Author(s):  
徐超 Xu Chao ◽  
高淑梅 Gao Shumei ◽  
苏宙平 Su Zhouping ◽  
钱维莹 Qian Weiying ◽  
刘诚 Liu Cheng
Keyword(s):  
Design Method ◽  
Optical Design ◽  
Uniform Illumination

scholarly journals Through-bottle whisky sensing and classification using Raman spectroscopy in an axicon-based backscattering configuration

2020 ◽  
Vol 12 (37) ◽  
pp. 4572-4578
Author(s):  
Holly Fleming ◽  
Mingzhou Chen ◽  
Graham D. Bruce ◽  
Kishan Dholakia
Keyword(s):  
Raman Spectroscopy ◽  
Laser Beam ◽  
Optical Design

A novel optical design allows through-bottle Raman spectroscopy of alcohols with minimised glass contributions to the signal, by using a shaped laser beam which forms a ring on the glass and a focus within the contents.

Characteristics of the defocused spherical Fabry-Pérot interferometer as a quasi-linear dispersion instrument for high resolution spectroscopy of pulsed laser sources

1968 ◽  
Vol 263 (1140) ◽  
pp. 209-223 ◽  
Keyword(s):  
Laser Beam ◽  
Optical Design ◽  
Pulsed Laser ◽  
Resolving Power ◽  
High Resolution Spectroscopy ◽  
Radius Of Curvature ◽  
Spherical Mirror ◽  
Linear Dispersion ◽  
Fabry Perot ◽  
Very High

Defocused spherical mirror Fabry—Pérot etalons, in which the mirror separation is slightly less than the common radius of curvature, produce a multiple-beam fringe pattern of concentric rings, with quasi-linear spectral dispersion over an appreciable annular region corresponding to two free spectral ranges. The characteristics of these interferograms are discussed in relation to their many advantages for pulsed laser spectroscopy. These advantages include: (i) accuracy of frequency difference measurement; (ii) high illumination of the detector with moderate energy density in the laser beam; (iii) ease of alinement and permanent adjustment of the mirrors leading to the attainment in practice of a very high instrumental finesse (N R values of up to 90 have been achieved); (iv) measurement of degree of spatial coherence of laser beam; (v) ease of matching the interferogram to the spatial resolution of the detector. A simple optical path relation determines the positions of the fringes and the location of the quasilinear dispersion region. The interfering wavefronts, formed by multiple reflexion, have been numerically computed and summed to provide information on the finesse, fringe profiles, contrast and optimum conditions of use of this new, very high resolving power (107 to 108) quasi-linear spectrographic disperser. Constructional details are described and optical design criteria are discussed, together with the various experimental arrangements for employing the instrument. Comparison is made with the equivalent confocal and plane Fabry—Pérot etalons and methods of simultaneously measuring

Optical design method of freeform lens for a high-power extended LED source

2012 ◽  
Author(s):  
Hong Wang ◽  
Naifeng Du ◽  
Yuefeng Wu ◽  
Huamao Huang
Keyword(s):  
High Power ◽  
Design Method ◽  
Optical Design ◽  
Freeform Lens

Study on optical design method for LED extended sources

2010 ◽  
Author(s):  
Hong Wang ◽  
Haihong Wang ◽  
Naifeng Du ◽  
Xiaofan Zhang
Keyword(s):  
Design Method ◽  
Optical Design ◽  
Extended Sources
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