Development of optical multipass matrix systems

Chernin, Semen

doi:10.1080/09500340010003753

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…Because all optical elements in the UMS are the spherical mirror, it is necessary to analyze the generalized transmission matrix of spherical mirror in case of all kinds of possible perturbation based on (10).…”

Section: General Analysis Of a Misaligned Optical Systemmentioning

confidence: 99%

“…It aims at obtaining less degraded beam when the beam traveled out from the output window, especially for the white cell series, that is, Bernstein-Herzberg White Cell (BHWC) [7,8] and Pickett-Bradley White Cell (PBWC) [9]. Other various kinds of white cell are based on these two basic configurations to get enhanced spot pattern on the field mirror, that is, Chernintype cell [10,11] (three-objective matrix multipass system and four-objective matrix multipass system). However, the analysis of the optical axis perturbation properties for a certain UMS has not been reported before.…”

Section: Introductionmentioning

confidence: 99%

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Optical Axis Perturbation Analysis for the Unit‐Magnification Multipass System

Guo

Sun

Yang

2017

Mathematical Problems in Engineering

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The optical axis sensitivity for the unit-magnification multipass system (UMS) is presented by using a general misaligned optical element transfer model. The generalized sensitivity factors SD1, SD2, ST1, and ST2 influenced by both the axial and angular misalignments of the objective mirrors in a UMS have been calculated for the first time. The Bernstein-Herzberg White Cells are used as an example, and their alignment tolerance and stability properties are found when their configurations change. The analysis in this paper is helpful for the design of other kinds of multipass gas cells (MGC) with high robustness and avoiding the violent vibration of the optical axis when the misalignment of each mirror is controlled within the tolerance range. Among the five possible perturbations sources, the misaligned factors δix,δiy,θix have more effects on the output beam’s position and the perturbed sources from δix,θix and δiy,θiy have more impacts on the output beam’s slope referred to as x-axis and y-axis, respectively. Higher reflection times mean smaller tolerance range. The results benefit the multipass cell design and the precise alignment of the mirrors within the cell with the purpose of long-term stability in measurements.

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Section: General Analysis Of a Misaligned Optical Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical Axis Perturbation Analysis for the Unit‐Magnification Multipass System

Guo

Sun

Yang

2017

Mathematical Problems in Engineering

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“…The original White-type cell [ 1 ] has only one row of reflection spots on the field mirror, while the early phase of improvements that were proposed by Berstein et al [ 3 ] and Pickett et al [ 4 ] have only two rows, which also possesses a relatively low path-to-volume ratio (PVR). Several latter variations aimed to promote the PVR, such as the multi-pass matrix systems (MMS) proposed by Chernin et al [ 5 , 6 , 7 ], Glowacki et al [ 8 ] and Guo [ 9 ]. Just as its name implies, the reflection spots are arranged to form a matrix on the field mirrors of MMS and the interval of rows and columns can be easily adjusted.…”

Section: Introductionmentioning

confidence: 99%

Generalized Optical Design of the Double-Row Circular Multi-Pass Cell

Yang¹,

Guo²,

Ming³

et al. 2018

Sensors

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A new design of circular multi-pass cells (CMPC) with two rows of reflection spots on mirrors is presented. The effective optical path length (OPL) of this novel CMPC is double that of traditional CMPC with the same diameter and interval of spots. This OPL can be readily adjusted to have regular intervals by rough rotation adjustment. We achieved a spatial separation of pre- and post-transfer optical systems that was adequately large even in the cases with a large number of passes. Analytical chief ray tracing analysis and a generalized method for parameter determination for designing the cell are presented in detail. The stable condition of the double-row CMPC (DR-CMPC) is also derived by the ABCD matrix method. Designs with maximum effective OPL of 74.72 m, 48.67 m and 24.57 m are demonstrated and verified by ray tracing simulations within a 25 cm diameter DR-CMPC. An adjustment of the regular intervals to 1 m can be achieved in both designs. The overall astigmatism of the design with an effective OPL of 74.72 m is only 9.30 × 10−6 mm, which is four orders of magnitude smaller than that of the traditional CMPC with similar geometric parameters.

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“…In most chambers the IR radiation is multipassed within the chamber using high reflectivity mirrors arranged in the White optics [29] configuration or modifications such as the Chernin configuration [30,31], in order to extend the path length. The number of passes is a trade off between the increased path length and the loss of overall intensity at each reflection.…”

Section: Optical Spectroscopymentioning

confidence: 99%

A brief review of the use of environmental chambers for gas phase studies of kinetics, chemical mechanisms and characterisation of field instruments

Seakins

2010

EPJ Web of Conferences

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Abstract. This introductory review considers the role of environmental chambers in atmospheric chemistry, emphasising the importance of being able to carry out studies in controlled conditions. The advantages and disadvantages of different types of chambers are discussed and compared. Examples of the use of chambers for kinetic and mechanistic studies are presented. The final section of this brief review considers the use of chambers in providing a well defined environment for calibrating and investigating the performance of field instruments.

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Development of optical multipass matrix systems

Cited by 5 publications

References 13 publications

Optical Axis Perturbation Analysis for the Unit‐Magnification Multipass System

Optical Axis Perturbation Analysis for the Unit‐Magnification Multipass System

Generalized Optical Design of the Double-Row Circular Multi-Pass Cell

A brief review of the use of environmental chambers for gas phase studies of kinetics, chemical mechanisms and characterisation of field instruments

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