&lt;title&gt;Laser pointing stability measurements&lt;/title&gt;

Levesque, Marc; Mailloux, Alain; Morin, Michel; Galarneau, Pierre; Champagne, Yves; Plomteux, O.; Tiedtke, M.

doi:10.1117/12.259900

Cited by 13 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1(a). This model approximates the beam-like output from a realistic continuous-wave laser, for which a given realization in the space-time domain is denoted by Here, is a complex envelope that varies slowly both in time and space, denotes the temporally varying propagation direction on account of the pointing-stability of the laser [15,16] and denotes the temporally fluctuating polarization. This directional instability of the laser source leads to the output being a partially coherent electromagnetic field.…”

Section: Field Pointing Fluctuations On the Nano Objectmentioning

confidence: 99%

Partially coherent light interaction with nano objects

Premaratne

2012

2012 14th International Conference on Transparent Optical Networks (ICTON)

View full text Add to dashboard Cite

Scattering of fully coherent light from nano objects is a very matured field with plethora of applications. However, due to various fundamental and operational reasons, fluctuations in various characteristic features of interacting light fields cannot be fully suppressed. Such light fields with random fluctuating features are known as partially coherent light. When partially coherent light interact with nano-objects (i.e. solids or voids), new characteristics emerge (e.g. coherence vortex, fully-incoherent point-pairs) that are absent in fully coherent scattered fields. In this paper, we review the fundamental metrics for characterising partially coherent light and how such metrics can be used to reveal some of the hidden features of partially coherent light interacting with nano-objects.

show abstract

Section: Field Pointing Fluctuations On the Nano Objectmentioning

confidence: 99%

Partially coherent light interaction with nano objects

Premaratne

2012

2012 14th International Conference on Transparent Optical Networks (ICTON)

View full text Add to dashboard Cite

show abstract

“…Multiple noise sources influence the determined position of the centroid on the camera chip. This includes dark current, shot noise and also centroid instability of the incident beam (EMVA Standard 1288Levesque et al, 1996). These sources sum up to a compound uncertainty of the centroid determination.…”

Section: Centroid Determinationmentioning

confidence: 99%

Characterization of specular freeform surfaces from reflected ray directions using experimental ray tracing

Binkele

Hilbig

Essameldin

et al. 2021

J. Sens. Sens. Syst.

View full text Add to dashboard Cite

Abstract. The applications of freeform surfaces in optical components and systems are increasing more and more. Therefore, appropriate measurement techniques are needed to measure these freeform surfaces for verification. This task is still a challenge for most measurement techniques. In this paper, we propose a measurement technique for optical and other specular freeform surfaces based on experimental ray tracing. This technique is able to measure form and mid-spatial-frequency deviations simultaneously. The focus will be set on the sensing technique and the measurement uncertainties in the setup. As the measurement technique is described, an estimation of the influence of different uncertainties based on simulations is given. The result from an experimental measurement is evaluated in relation to the influence of the uncertainties. A comparison measurement for evaluation is given.

show abstract

“…In the electronic circuit, the TIE photoelement outputs are amplified and added to form a signal described by Eq. (6). This output signal is also converted to a digital form by a 12 (or 14) bit analog-to-digital converter.…”

Section: A Measuring Setupmentioning

confidence: 99%

“…In the simplest case, the deflection of an optical beam is sensed using a position-sensitive detector in a triangulation configuration (see, for example, [4][5][6]). To sense small deflections of a laser beam by triangulation, the position-sensitive detector is placed a constant distance away from the deflection point, and analyzes the displacement of the observed laser spot.…”

Section: Introductionmentioning

confidence: 99%

Interference method for ultra-precision measurement and compensation of laser beam angular deflection

Dobosz

Iwasińska-Kowalska

2013

Appl. Opt.

View full text Add to dashboard Cite

A new interferometric method for ultra-precise measurement of laser-beam angular deflection is proposed. The angular tilt of a measuring device in relation to the beam axis also can be measured. The method is based on interference fringe period analysis in the selected plane of measurement. The theoretical basis and experimental verification of the method are presented. It is shown that by using the proposed technique, it is possible to measure the laser beam angular deflection or instability with ultrahigh resolution reaching single nanoradians. The proposed method allows the measurement and further compensation of laser beam deflections in a very compact design.

show abstract

<title>Laser pointing stability measurements</title>

Cited by 13 publications

References 0 publications

Partially coherent light interaction with nano objects

Partially coherent light interaction with nano objects

Characterization of specular freeform surfaces from reflected ray directions using experimental ray tracing

Interference method for ultra-precision measurement and compensation of laser beam angular deflection

Contact Info

Product

Resources

About