2015年2月
Sensitivity enhancement of photothermal microscopy with radially segmented balanced detection
OPTICS LETTERS
- ,
- ,
- ,
- 巻
- 40
- 号
- 4
- 開始ページ
- 479
- 終了ページ
- 482
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OL.40.000479
- 出版者・発行元
- OPTICAL SOC AMER
A novel detection method is proposed for highly sensitive photothermal microscopic imaging. This method is based on the characteristics of an angular-dependent photothermal signal; it improves signal intensity by up to two times and rejects the intensity noise of the probe beam. The subdiffraction resolution photothermal imaging of mouse skin melanoma is demonstrated using a laser diode-based photothermal microscopy system to evaluate this method. We confirm that the signal intensity is enhanced 1.7 times compared with the conventional detection method. Moreover, the intensity noise of the laser diode used for the probe beam is effectively reduced by approximately 31 dB, even for a sample with non-uniformity of the refractive index and stationary absorption. This method is implemented by means of a commonly used balanced detector and is thus potentially useful for high-speed imaging. (C) 2015 Optical Society of America
- リンク情報
- ID情報
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- DOI : 10.1364/OL.40.000479
- ISSN : 0146-9592
- eISSN : 1539-4794
- Web of Science ID : WOS:000349848400011