Design methodology and evaluation of a high performance MWIR interferometer

Daniel Millstone

doi:10.1117/12.2632459

31 May 2022 Design methodology and evaluation of a high performance MWIR interferometer

Daniel Millstone

Proceedings Volume 12098, Dimensional Optical Metrology and Inspection for Practical Applications XI; 1209808 (2022) https://doi.org/10.1117/12.2632459
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Seeking and tracking high thermal signature targets requires extreme precision to protect assets and prevent misidentification of threats. In these situations, the midwave infrared (MWIR) region of the electromagnetic spectrum is the ideal wavelength range for optical detection. Systems used in these scenarios have stringent transmitted wavefront and performance requirements, often needing optical alignment tools that can be adapted to the wavelength specifications and test configurations unique to the optical system being built and tested. Discussed here is a high performance MWIR Twyman-Green-style interferometer with a dual port configuration. This system was designed to allow for multiple simultaneous test setups – including expanded beams – while maintaining high-accuracy wavefront measurements in both well-controlled and turbulent environments. This paper presents design methodology and performance of the interferometer with special consideration for cost, usability, and maintaining test configurations and functionality.

Conference Presentation

Citation Download Citation

Daniel Millstone "Design methodology and evaluation of a high performance MWIR interferometer", Proc. SPIE 12098, Dimensional Optical Metrology and Inspection for Practical Applications XI, 1209808 (31 May 2022); https://doi.org/10.1117/12.2632459

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