Product category:
Cameras and imaging systems
News Release from: Optical Surfaces | Subject: HR-LCFP
Edited by the Laboratorytalk Editorial
Team on 28 May 2003
Optimised near-IR tunable optical filter
The demanding specifications required of the etalon pairs was better than lambda/200 matching accuracy and surface roughness of less than 10 angstroms
Optical Surfaces has announced that it is a key component supplier to Scientific Solutions for its NIR high resolution liquid crystal Fabry-Perot etalon (HR-LCFP), a next-generation tunable optical filter optimised for use in the near infrared Using proprietary manufacturing techniques in a thermally stable production environment has enabled Optical Surfaces to routinely supply batches of fused silica etalon pairs with industry leading accuracy to Scientific Solutions
This article was originally published on Laboratorytalk on 15 Apr 2003 at 8.00am (UK)
Related stories
Next-generation tunable optical filter
High resolution liquid crystal Fabry-Perot etalon provides a solid-state, tunable interferometer whose plate parallelism is fixed at the time of manufacture yet maintains tunability
Parabolic mirrors for largest solar telescope
Optical Surfaces has delivered three high precision off-axis parabolic mirrors as key focusing components in the adaptive optical system associated with BBSO's new 1.6 metre solar telescope
Fabry Perot Etalons to suit almost any application
Optical Surfaces is a supplier of Fabry-Perot etalons in a range of shapes and sizes up to 150mm in diameter with matching accuracies to lambda/300
The demanding specifications required of the etalon pairs, to deliver the high performance of the HR-LCFP, was better than lambda/200 matching accuracy and surface roughness of less than 10 angstroms.
The HR-LCFP provides a solid-state, tunable interferometer whose plate parallelism is fixed at the time of manufacture, yet maintains tunability over several orders of interference with a narrow bandpass and arbitrary resonant gap size.
The device utilises a thin liquid-crystal cell in its resonant cavity formed by the highly polished etalon substrates.
The refractive index between the substrates is altered by varying an electric field across the liquid crystal.
The novel technology incorporated in the HR-LCFP allows rapid, precise and highly stable spectral selection.
Because the HR-LCFP is frequency agile, it enables nearly simultaneous measurement of multiple wavelengths in the NIR region.
Current applications for the HR-LCFP include laser tuning, lidar and narrowband spectral imaging.
Future use is anticipated in spectroscopic, telecommunications and spaceborne sensing applications.
• Optical Surfaces: contact details and other news
• Email this article to a colleague
• Register for the free Laboratorytalk email newsletter
• Laboratorytalk Home Page
Search the Pro-Talk network of sites
