Quantum-enhanced stimulated Raman scattering microscopy toward breaking the shot noise limit in high-power regime

Kenichi Oguchi; Zicong Xu; Yoshitaka Taguchi; Shun Takahashi; Yuki Sano; Takaha Mizuguchi; Kazuhiro Katoh; Yasuyuki Ozeki

doi:10.1117/12.2649579

15 March 2023 Quantum-enhanced stimulated Raman scattering microscopy toward breaking the shot noise limit in high-power regime

Kenichi Oguchi, Zicong Xu, Yoshitaka Taguchi, Shun Takahashi, Yuki Sano, Takaha Mizuguchi, Kazuhiro Katoh, Yasuyuki Ozeki

Author Affiliations +

Proceedings Volume 12392, Advanced Chemical Microscopy for Life Science and Translational Medicine 2023; 1239206 (2023) https://doi.org/10.1117/12.2649579
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Stimulated Raman scattering (SRS) microscopy is a powerful technique that allows for the visualization of molecular vibrational images for label-free imaging, metabolic imaging, and supermultiplex imaging. However, its sensitivity is mainly limited by the shot noise of laser pulses, and long acquisition times are sometimes required to detect weak SRS signals hidden by the shot noise. To overcome this limitation, quantum-enhanced (QE-) SRS microscopy has been demonstrated, while the low optical power of squeezed pulses limits the sensitivity. In this work, we present QE-SRS microscopy using quantum-enhanced balanced detection (QE-BD) scheme, where the sensitivity of balanced detection SRS microscope is enhanced by injecting squeezed vacuum, allowing for QE-SRS imaging with high power SRS pump pulses (typically several tens of milliwatt), while balanced detection causes 3 dB drawback in the signal-to-noise ratio. We experimentally demonstrate QE-SRS imaging with 2.6 dB noise reduction compared with shot-noise-limited balanced detection SRS. We also demonstrate hyperspectral QE-SRS imaging by fast wavelength tuning of Stokes pulses. These results show the potential feasibility of high-power QE-SRS whose sensitivity is beyond that of classical shot-noise-limited SRS microscopes.

Conference Presentation

Citation Download Citation

Kenichi Oguchi, Zicong Xu, Yoshitaka Taguchi, Shun Takahashi, Yuki Sano, Takaha Mizuguchi, Kazuhiro Katoh, and Yasuyuki Ozeki "Quantum-enhanced stimulated Raman scattering microscopy toward breaking the shot noise limit in high-power regime", Proc. SPIE 12392, Advanced Chemical Microscopy for Life Science and Translational Medicine 2023, 1239206 (15 March 2023); https://doi.org/10.1117/12.2649579

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