Cryogenic optical beam steering for superconducting device calibration
Document Type
Article
Publication Date
6-2025
Publisher
SPIE
Abstract
We have developed a calibration system based on a micro-electro-mechanical system mirror that is capable of delivering an optical beam over a wavelength range of 180 to 2000 nm (0.62 to 6.89 eV) in a sub-Kelvin environment. This portable, integrated system is designed to steer the beam over an ∼3cm×3cm∼3cm×3cm area on the surface of any sensor with a precision of ∼100μm∼100μm, enabling the characterization of device response as a function of position. This fills a critical need in the landscape of calibration tools for sub-Kelvin devices, including those used for dark matter detection and quantum computing. These communities have a shared goal of understanding the impact of ionizing radiation on device performance, which can be pursued with our system. We describe the design of the first-generation calibration system and the results from successfully testing its performance at room temperature and 20 mK.
Recommended Citation
Stifter, K., Magoon, H., Anderson, A. J., Temples, D. J., Kurinsky, N. A., Stoughton, C., Hernandez, I., Nuñez, A., Anyang, K., Linehan, R., Young, M. R., Barry, P., Baxter, D., Bowring, D., Cancelo, G., Chou, A., Dibert, K. R., Figueroa-Feliciano, E., Hsu, L., … Young, B. A. (2025). Cryogenic optical beam steering for superconducting device calibration. Journal of Optical Microsystems, 5(2), 024503. https://doi.org/10.1117/1.JOM.5.2.024503