Research on development of aspheric diffractive optical element for mid-infrared imaging
Journal article
Khatri, N., Berwal, S., Manjunath, M., Singh, B., Mishra, V. and Goel, S. (2023). Research on development of aspheric diffractive optical element for mid-infrared imaging. Infrared Physics & Technology. 129, p. 104582. https://doi.org/10.1016/j.infrared.2023.104582
Authors | Khatri, N., Berwal, S., Manjunath, M., Singh, B., Mishra, V. and Goel, S. |
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Abstract | The aspheric diffractive singlet achromat design in precision infrared optical systems is used to reduce chromatic aberration. With the advancement in micro-optics, conventional lenses are replaced by diffractive and aspheric diffractive lenses with sub-structures to fulfill the requirements of miniaturized and compact designs of the optical devices. In this paper, the design and development of a high precision aspheric diffractive germanium lens is described. Specifically, the aspheric diffractive lens was designed for Mid Wave Infrared (MWIR) range to achieve an aberration free and diffracted limited surface fabricated by the diamond turning process. The profile of the machined aspherical diffractive lens was measured by optical profilometer and the results demonstrated a step height error of 0.001 µm and radial error of 0.001 mm. A smooth quality aspheric diffractive lens was fabricated with 99.57% diffraction efficiency. |
Keywords | Infra Red imaging; Diamond turning |
Year | 2023 |
Journal | Infrared Physics & Technology |
Journal citation | 129, p. 104582 |
Publisher | Elsevier |
ISSN | 1879-0275 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.infrared.2023.104582 |
Web address (URL) | https://www.sciencedirect.com/journal/infrared-physics-and-technology |
Publication dates | |
07 Feb 2023 | |
Publication process dates | |
Accepted | 28 Jan 2023 |
Deposited | 30 Jan 2023 |
Accepted author manuscript | License File Access Level Open |
https://openresearch.lsbu.ac.uk/item/9321q
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