Dr. Thomas C. Sidler Profile

Dr. Thomas C. Sidler

Researcher/Project Manager at Sidler Lasers&Mictotechnics

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Publications (13)

Proceedings Article | 2 April 2018 Open Access

A demonstrator for an incoherent Doppler wind lidar receiver

F. Fabre, A. Marini, Thomas Sidler, Didier Morancais, G. Fongy, Ph. Vidal

Proceedings Volume 10570, 1057005 (2018) https://doi.org/10.1117/12.2326433

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The knowledge of wind fields for a global terrestrial coverage and accurate altitude sampling is one of the main keys for improvement of meteorological predictions and general understanding of atmosphere behaviour. The best way to recover this information is remote sensing from space using low Earth orbit satellites. The measurement principle is to analyse the Doppler shift of the flux emitted by the space instrument and backscattered by the atmosphere. One of the most promising principle for Doppler shift measurement is the direct detection which does not need local oscillators. what significantly simplifies the design of such a space-borne receiver. ESA-ESTEC initiated at early 95' a programme called "lncoherent Doppler Wind Lidar (IDWL) technologies" for the study and bread-boarding phase. MMS won this contract proposing an original concept based on the use of a Fizeau high resolution interferometer working in the UV band. coupled with an intensified CCD. This concept is patented by MMS, as well as the special CCD timing sequence that will be depicted below. The programme begun by a study of the space-borne instrument in order to identify main constraints and define the receiver as could be for a flight model. A detailed performance model was established and parametric analysis allowed to optimise the concept in order to reach required performances. This study phase finally provided the definition of a bread-board for expected performances demonstration. Moreover, the Laser Signal Simulator (LSS) which is used to simulate the Lidar echo in term of amplitude as well as frequency modulation was defined at this step. The performances of this test support equipment are of main importance for the validation of the demonstrator design and performances. The second part of the study aimed at defining the derailed design of the demonstrator and associated test support equipment as well as initiating preliminary validation experiments on most critical technologies, like Fizeau interferometer which needs particularly high thermal stability and spectral resolution. At the end of this design phase. the test bench equipment begun to be manufactured and equipment test results preliminary assessed the study phase results. After integration, the correct operation and control of the overall test bench were assessed and performance tests were undertaken . The final conclusion of this programme aimed at updating the performance simulation software in order to refine expected performances for the future flight instrument.

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Proceedings Article | 18 November 2003 Paper

Reliable laser micro-spot welding of copper

Simone Amorosi, Thomas Sidler, Rene Salathe, Hans Schwob, Joachim Hertzberg

Proceedings Volume 5063, (2003) https://doi.org/10.1117/12.540460

KEYWORDS: Laser welding, Sensors, Copper, Reflectivity, Plasma, Digital signal processing, Nd:YAG lasers, Liquids, Signal processing, Indium gallium arsenide

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Proceedings Article | 14 November 2003 Paper

Second-harmonic generation with free-running Nd:YAG laser

Sebastian Favre, Thomas Sidler, Rene-Paul Salathe

Proceedings Volume 5147, (2003) https://doi.org/10.1117/12.537465

KEYWORDS: Crystals, Absorption, Second-harmonic generation, Nd:YAG lasers, Ferroelectric materials, Harmonic generation, Laser crystals, Nonlinear crystals, Optical damage, Q switching

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SPIE Journal Paper | 1 April 2003

Study of the beam path distortion profiles generated by a two-axis tilt single-mirror laser scanner

Moustapha Hafez, Thomas Sidler, Rene-Paul Salathe

OE, Vol. 42, Issue 04, (April 2003) https://doi.org/10.1117/12.10.1117/1.1557694

KEYWORDS: Distortion, Mirrors, Laser scanners, Scanners, Sensors, Head, Optical engineering, 3D scanning, Photodiodes, Reflection

Proceedings Article | 6 June 2002 Paper

High-efficiency laser resonators for high-brightness beam generation with application to micromaterial processing and nonlinear processes

Thomas Sidler

Proceedings Volume 4629, (2002) https://doi.org/10.1117/12.469478

KEYWORDS: Resonators, Second-harmonic generation, Pulsed laser operation, Mirrors, Telescopes, Nd:YAG lasers, Laser cutting, Laser resonators, Harmonic generation, Materials processing

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Proceedings Article | 8 October 2001 Paper

Monolithic shape memory alloy microgripper for 3D assembly of tissue engineering scaffolds

Han Zhang, Yves Bellouard, Thomas Sidler, Etienne Burdet, Aun-Neow Poo, Reymond Clavel

Proceedings Volume 4568, (2001) https://doi.org/10.1117/12.444144

KEYWORDS: Actuators, Shape memory alloys, Annealing, Tissue engineering, Temperature metrology, Laser cutting, Laser development, Tissues, Polymers

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Proceedings Article | 6 November 2000 Paper

Local annealing of shape memory alloys using laser scanning and computer vision

Moustapha Hafez, Yves Bellouard, Thomas Sidler, Reymond Clavel, Rene-Paul Salathe

Proceedings Volume 4088, (2000) https://doi.org/10.1117/12.405705

KEYWORDS: Annealing, Shape memory alloys, Laser scanners, Semiconductor lasers, Scanners, 3D scanning, Mirrors, Computing systems, Machine vision, Computer vision technology

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Proceedings Article | 6 November 2000 Paper

High-power second harmonic generation with free-running Nd:YAG slab laser for micromachining applications

Sebastian Favre, Thomas Sidler, Rene-Paul Salathe

Proceedings Volume 4088, (2000) https://doi.org/10.1117/12.405707

KEYWORDS: Crystals, Nd:YAG lasers, Ferroelectric materials, Laser damage threshold, Harmonic generation, Pulsed laser operation, Materials processing, Laser applications, Second-harmonic generation, Nonlinear crystals

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Proceedings Article | 6 November 2000 Paper

Compact multisensor laser scanning head for processing and monitoring microspot welding

Moustapha Hafez, Karin Julliard, Sylvain Grossmann, Lino Olivetta, Thomas Sidler, Rene-Paul Salathe, Hans-Peter Schwob, Toon Blom, Willem Hoving

Proceedings Volume 4088, (2000) https://doi.org/10.1117/12.405717

KEYWORDS: Sensors, Head, Scanners, Laser scanners, Mirrors, Lens design, Laser welding, Optical fibers, Beam delivery, Pulsed laser operation

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Proceedings Article | 18 August 1999 Paper

Fast-steering two-axis tilt mirror for laser pointing and scanning

Moustapha Hafez, Thomas Sidler

Proceedings Volume 3834, (1999) https://doi.org/10.1117/12.357822

KEYWORDS: Mirrors, Scanners, Sensors, Laser scanners, Laser applications, 3D scanning, Materials processing, Lens design, Actuators, Electromagnetism

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Proceedings Article | 11 December 1996 Paper

Flexible automated assembly of micro-optical elements (optical SMD)

Wolfgang Andreasch, Christian de Graffenried, Robert Kohler, Reymond Clavel, Thomas Sidler, Rene-Paul Salathe, Ronald Mueller, Hannes Bleuler, Bernhard Gaechter, Hartmut Ehbets

Proceedings Volume 2906, (1996) https://doi.org/10.1117/12.260620

KEYWORDS: Optical components, Laser welding, Robots, Photodiodes, Semiconductor lasers, Collimators, Magnetism, Beam splitters, Prototyping, Collimation

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Proceedings Article | 23 September 1996 Paper

Miniaturized electrically steerable mirror holder fabricated with an integral cutting conception

Thomas Sidler, Eric Leiglon, Manuel Bouvier

Proceedings Volume 2789, (1996) https://doi.org/10.1117/12.251178

KEYWORDS: Mirrors, Laser cutting, Chemical oxygen iodine lasers, Chemical elements, Fabry–Perot interferometers, Actuators, Assembly tolerances, Tolerancing, Epoxies, Helium neon lasers

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Proceedings Article | 1 August 1990 Paper

YAG-slab laser cutting performance

Thomas Sidler, Juerg Steffen

Proceedings Volume 1277, (1990) https://doi.org/10.1117/12.20588

KEYWORDS: Laser cutting, High power lasers, Solid state lasers, YAG lasers, Beam shaping, Laser applications, Nd:YAG lasers, Carbon dioxide lasers, Radium, Laser systems engineering

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Showing 5 of 13 publications

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