@inproceedings{af8c2f9d9f51464292f45f8718e23cf3,
title = "Fabrication and testing of germanium grisms for LMIRcam",
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.",
keywords = "Germanium, Grism, Infrared, LMIRcam",
author = "Kuzmenko, {Paul J.} and Little, {Steve L.} and Little, {Liesl M.} and Wilson, {John C.} and Skrutskie, {Michael F.} and Hinz, {Phillip M.} and Leisenring, {Jarron M.} and Oliver Durney",
year = "2012",
doi = "10.1117/12.926674",
language = "English (US)",
isbn = "9780819491510",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II",
note = "Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II ; Conference date: 01-07-2012 Through 06-07-2012",
}