Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 6: Solid State Quantum Optics I
Q 6.8: Talk
Monday, March 11, 2024, 12:45–13:00, HS 3118
Direct measurement of coherent light proportion from a laser source without spectral filtering — •Xi Jie Yeo1, Eva Ernst1, Alvin Leow1, Lijiong Shen1, Jaesuk Hwang1, Christian Kurtsiefer1,2, and Peng Kian Tan1 — 1Centre for Quantum Technologies, Singapore, Singapore — 2National University of Singapore, Singapore, Singapore
We present a method to measure the fraction of coherent light emitted by a practical laser source, using interferometric photon correlations; correlations between photoevents detected at the output ports of an asymmetric Mach-Zehnder interferometer. Using this technique, we characterize the fraction of coherent light emitted by a laser diode transiting across its lasing threshold.
Keywords: photon correlations; interferometry; coherence; photon statistics; lasing threshold