Direct measurement of pseudothermal light violating Siegert relation

Xi Jie Yeo; Justin Peh; Darren Koh; Ming Ze Qing; Jaesuk Hwang; Peng Kian Tan; Christian Kurtsiefer

doi:10.1117/12.3021059

27 August 2024 Direct measurement of pseudothermal light violating Siegert relation

Xi Jie Yeo, Justin Peh, Darren Koh, Ming Ze Qing, Jaesuk Hwang, Peng Kian Tan, Christian Kurtsiefer

Proceedings Volume 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI; 1310326 (2024) https://doi.org/10.1117/12.3021059
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Pseudothermal light exhibits photon bunching, like thermal light, but it does not originate from randomly phased emission. As photon bunching is common in both pseudothermal and thermal light, the analysis of photon bunching is insufficient to differentiate pseudothermal light and thermal light. However, thermal light obeys the Siegert relation, which connects the interferometric visibility ∥g⁽¹⁾(τ )∥ and second-order photon correlation g⁽²⁾(τ ). In this work, we present a direct test test for Siegert relation by a single-shot measurement. Using our technique, we demonstrate that laser light scattered off a rotating ground glass, violates the Siegert relation, which provides further evidence that it is a pseudothermal light source.

Citation Download Citation

Xi Jie Yeo, Justin Peh, Darren Koh, Ming Ze Qing, Jaesuk Hwang, Peng Kian Tan, and Christian Kurtsiefer "Direct measurement of pseudothermal light violating Siegert relation", Proc. SPIE 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI, 1310326 (27 August 2024); https://doi.org/10.1117/12.3021059

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