A Hyperchromatic Lens for Recording Time-Resolved Phenomena
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Special Technologies Lab. (STL), Santa Barbara, CA (United States)
Current methods of recording multiple-frame images at short time scales are limited by electro-optic tube physics and radiometry. A new all-optical methodology has been developed for the capture of a high number of quasi-continuous effective frames of 2-D data at very short time scales (from less than 10–12 to more than 10–8 seconds), with improvement over existing framing camera technology in terms of short recording windows and effective number of frames. The methodology combines active illumination in which wavelength is dependent upon time and spatial position to encode temporal phenomena onto wavelength; a hyperchromatic lens to map wavelength onto axial position, and a recording technology, such as holography or plenoptic imaging, to capture the resultant focal stack in both spatial (imaging) and longitudinal (temporal) axes. The novel hyperchromatic lens we designed incorporates a combination of diffractive and refractive components to maximally separate focal position as a function of wavelength, resulting in a 45 mm focal stack with nearly constant magnification for just 5 nm of illumination bandwidth. The fabricated lens assembly was qualified as meeting design requirements and images with the expected magnification at nearly the diffraction limit across the spectral range. This paper will focus on hyperchromatic lens design.
- Research Organization:
- Nevada Test Site (NTS), Mercury, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 1245610
- Report Number(s):
- DOE/NV/25946-2144
- Journal Information:
- Proc. SPIE 9193, Novel Optical Systems Design and Optimization XVII, 91930X (12 September 2014); doi: 10.1117/12.2063134, Vol. 9193; Conference: Society of Photo-Optical Instrumentation Engineers (SPIE) Conference on Optics and Photonics 2014 San Diego, CA August 17 - 21, 2014 http://spie.org/Documents/ConferencesExhibitions/OP14-optical-engineering-call-L
- Country of Publication:
- United States
- Language:
- English
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