スペクトル・エンコーディングを用いたラインフィールド 共焦点デュアル光コム顕微鏡

長谷 栄治; 宮本 周治; 市川 竜嗣; 南川 丈夫; 山本 裕紹; 安井 武史

doi:10.2184/lsj.45.6_324

Laser Review

Line-Field Confocal Dual-Optical-Comb Microscopy based on Spectral Encoding

Eiji HASE, Shuji MIYAMOTO, Ryuji ICHIKAWA, Takeo MINAMIKAWA, Hirotsugu YAMAMOTO, Takeshi YASUI

Author information

Keywords: Confocal laser microscopy, Optical comb, Dual comb spectroscopy, Spectral encoding

JOURNAL FREE ACCESS

2017 Volume 45 Issue 6 Pages 324-

DOI https://doi.org/10.2184/lsj.45.6_324

Details

Abstract

An optical frequency comb (OFC) has attracted attention in optical frequency metrology because the mode-resolved OFC spectrum can be used as a precise frequency ruler due to both broadband spectrum and narrow linewidth characteristics. However, other than optical frequency metrology, the application fields of OFC remain undeveloped. Another interesting aspect of OFC is an optical carrier with a huge number of discrete frequency channels because OFC is composed of a series of frequency spikes that are regularly separated by a repetition frequency in the broad spectral range. In this paper, we encode the line-image of a sample on the mode-resolved OFC spectrum by 1D spectral encoding. The resulting line-image-encoded OFC spectrum is acquired by a dual-comb spectrometer after passing through a confocal pinhole. Finally, the line image is decoded from the mode-resolved amplitude spectrum. The proposed method enables us to establish both confocality and line-field imaging under a scan-less condition.

Corresponding author

Register with J-STAGE for free!