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arXiv · 2007.12800

Computationally image-corrected dual-comb microscopy with a free-running single-cavity dual-comb fiber laser

Takahiko Mizuno·Yoshiaki Nakajima·Yuya Hata·Takuya Tsuda·Akifumi Asahara·Takashi Kato·Takeo Minamikawa·Takeshi Yasui·Kaoru Minoshima
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Abstract

Dual-comb microscopy (DCM), an interesting imaging modality based on the optical-frequency-comb (OFC) mode and image pixel one-to-one correspondence, benefits from scan-less full-field imaging and simultaneous confocal amplitude and phase imaging. However, the two fully frequency-stabilized OFC sources requirement hampers DCM practicality due to the complexity and costs. Here, a bidirectional single-cavity dual-comb fiber laser (SCDCFL) is adopted as a DCM low-complexity OFC source. Computational image correction reduces the image blur caused by the SCDCFL residual timing jitter. Nanometer-order step surface profilometry with a 14.0 nm uncertainty highlights the image-corrected DCM effectiveness. The proposed method enhances the DCM versality and practicality.

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Takahiko Mizuno, Yoshiaki Nakajima, Yuya Hata, Takuya Tsuda, Akifumi Asahara, Takashi Kato, Takeo Minamikawa, Takeshi Yasui, Kaoru Minoshima. 2020-07-24. Computationally image-corrected dual-comb microscopy with a free-running single-cavity dual-comb fiber laser. https://doi.org/10.1364/oe.415242

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