Development and Optical Testing of the Camera, Hand Lens, and Microscope Probe with Scannable Laser Spectroscopy (CHAMP-SLS)
2008
Conducting high resolution field microscopy with coupled laser spectroscopy that can be used to selectively analyze the
surface chemistry of individual pixels in a scene is an enabling capability for next generation robotic and manned
spaceflight missions, civil, and military applications. In the laboratory, we use a range of imaging and surface
preparation tools that provide us with in-focus images, context imaging for identifying features that we want to
investigate at high magnification, and surface-optical coupling that allows us to apply optical spectroscopic analysis
techniques for analyzing surface chemistry particularly at high magnifications. The camera, handlens, and microscope
probe with scannable laser spectroscopy (CHAMP-SLS) is an imaging/spectroscopy instrument capable of imaging
continuously from infinity down to high resolution microscopy (resolution of ~1 micron/pixel in a final camera format),
the closer CHAMP-SLS is placed to a feature, the higher the resultant magnification. At hand lens to microscopic
magnifications, the imaged scene can be selectively interrogated with point spectroscopic techniques such as Raman
spectroscopy, microscopic Laser Induced Breakdown Spectroscopy
(micro-LIBS), laser ablation mass-spectrometry,
Fluorescence spectroscopy, and/or Reflectance spectroscopy. This paper summarizes the optical design, development,
and testing of the CHAMP-SLS optics.
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