Mid-infrared spatial filters fabrication using laser chemical etching

Christian Y. Drouët D'Aubigny, Christopher K Walker, Dathon Golish

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Feedhorns like those commonly used in radio-telescope and radio communication equipment couple very efficiently (>98%) to the fundamental Gaussian mode (TEM00). High order modes are not propagated through a single-mode hollow metallic waveguides. It follows that a back to back feedhorn design joined with a small length of single-mode waveguide can be used as a very high throughput spatial filter. Laser micro machining provides a mean of scaling successful waveguide and quasi-optical components to far and mid infrared wavelengths. A laser micro machining system optimized for THz and far IR applications has been in operation at Steward Observatory for several years and produced devices designed to operate at λ=60μm. A new laser micromachining system capable of producing mid-infrared devices will soon be operational. These proceedings review metallic hollow waveguide spatial filtering theory, feedhorn designs as well as laser chemical etching and the design of a new high-NA UV laser etcher capable of sub-micron resolution to fabricate spatial filters for use in the mid-infrared.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsW.A. Traub
Pages655-666
Number of pages12
Volume5491
EditionPART 2
DOIs
StatePublished - 2004
EventNew Frontiers in Stellar Interferometry - Glasgow, United Kingdom
Duration: Jun 21 2004Jun 25 2004

Other

OtherNew Frontiers in Stellar Interferometry
CountryUnited Kingdom
CityGlasgow
Period6/21/046/25/04

Fingerprint

Chemical lasers
chemical lasers
Etching
Waveguides
etching
Infrared radiation
waveguides
filters
Fabrication
fabrication
Lasers
machining
hollow
Machining
Infrared devices
communication equipment
radio communication
Radio telescopes
laser machining
spatial filtering

Keywords

  • Chemical Etching
  • Hollow Waveguide
  • Interferometry
  • Laser Machining
  • Silicon
  • Single Mode

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Drouët D'Aubigny, C. Y., Walker, C. K., & Golish, D. (2004). Mid-infrared spatial filters fabrication using laser chemical etching. In W. A. Traub (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (PART 2 ed., Vol. 5491, pp. 655-666). [76] https://doi.org/10.1117/12.552671

Mid-infrared spatial filters fabrication using laser chemical etching. / Drouët D'Aubigny, Christian Y.; Walker, Christopher K; Golish, Dathon.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / W.A. Traub. Vol. 5491 PART 2. ed. 2004. p. 655-666 76.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Drouët D'Aubigny, CY, Walker, CK & Golish, D 2004, Mid-infrared spatial filters fabrication using laser chemical etching. in WA Traub (ed.), Proceedings of SPIE - The International Society for Optical Engineering. PART 2 edn, vol. 5491, 76, pp. 655-666, New Frontiers in Stellar Interferometry, Glasgow, United Kingdom, 6/21/04. https://doi.org/10.1117/12.552671
Drouët D'Aubigny CY, Walker CK, Golish D. Mid-infrared spatial filters fabrication using laser chemical etching. In Traub WA, editor, Proceedings of SPIE - The International Society for Optical Engineering. PART 2 ed. Vol. 5491. 2004. p. 655-666. 76 https://doi.org/10.1117/12.552671
Drouët D'Aubigny, Christian Y. ; Walker, Christopher K ; Golish, Dathon. / Mid-infrared spatial filters fabrication using laser chemical etching. Proceedings of SPIE - The International Society for Optical Engineering. editor / W.A. Traub. Vol. 5491 PART 2. ed. 2004. pp. 655-666
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