Fabrication and testing of germanium grisms for LMIRcam

Paul J. Kuzmenko, Steve L. Little, Liesl M. Little, John C. Wilson, Michael F. Skrutskie, Philip M Hinz, Jarron M. Leisenring, Oliver Durney

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

10 Citations (Scopus)

Abstract

We diamond fly cut 2 sets of germanium grisms for the LMIRcam 3-5 micron Fizeau imager for the combined focus of the Large Binocular Telescope (LBT). The grisms mount in a filter wheel near a pupil to enable moderate resolution (R∼300) spectroscopy. Both sets have a measured blaze angle of 2.9°. The first set has a groove period of 40 lines/mm and will be used in first order with peak efficiency at 3.6 μm. The second set has 32 lines/mm. It can operate in first order with an efficiency peak near 4.4 μm and in second order with a peak near 2.3 μm. First results from testing the grisms in the instrument on the sky with the LBT are presented.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8450
DOIs
StatePublished - 2012
EventModern Technologies in Space- and Ground-Based Telescopes and Instrumentation II - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Other

OtherModern Technologies in Space- and Ground-Based Telescopes and Instrumentation II
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Fingerprint

Germanium
Binoculars
Telescopes
germanium
Fabrication
Testing
fabrication
Diamond
Image sensors
telescopes
Telescope
Diamonds
Wheels
Spectroscopy
pupils
wheels
First-order
grooves
sky
Line

Keywords

  • Germanium
  • Grism
  • Infrared
  • LMIRcam

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kuzmenko, P. J., Little, S. L., Little, L. M., Wilson, J. C., Skrutskie, M. F., Hinz, P. M., ... Durney, O. (2012). Fabrication and testing of germanium grisms for LMIRcam. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8450). [84503P] https://doi.org/10.1117/12.926674

Fabrication and testing of germanium grisms for LMIRcam. / Kuzmenko, Paul J.; Little, Steve L.; Little, Liesl M.; Wilson, John C.; Skrutskie, Michael F.; Hinz, Philip M; Leisenring, Jarron M.; Durney, Oliver.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8450 2012. 84503P.

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

Kuzmenko, PJ, Little, SL, Little, LM, Wilson, JC, Skrutskie, MF, Hinz, PM, Leisenring, JM & Durney, O 2012, Fabrication and testing of germanium grisms for LMIRcam. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8450, 84503P, Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II, Amsterdam, Netherlands, 7/1/12. https://doi.org/10.1117/12.926674
Kuzmenko PJ, Little SL, Little LM, Wilson JC, Skrutskie MF, Hinz PM et al. Fabrication and testing of germanium grisms for LMIRcam. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8450. 2012. 84503P https://doi.org/10.1117/12.926674
Kuzmenko, Paul J. ; Little, Steve L. ; Little, Liesl M. ; Wilson, John C. ; Skrutskie, Michael F. ; Hinz, Philip M ; Leisenring, Jarron M. ; Durney, Oliver. / Fabrication and testing of germanium grisms for LMIRcam. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8450 2012.
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