Improvement of signal-to-noise ratio in photothermal microscopy by optimizing detection aperture

descriptionPublicationkeyboard_double_arrow_right Article 01 May 2017 English Publisher:Elsevier BVJournal:Optics Communications, volume 390, pages 99-104 (issn: 0030-4018,

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Authors: Jun Miyazaki;

doi: 10.1016/j.optcom.2016.12.074

Improvement of signal-to-noise ratio in photothermal microscopy by optimizing detection aperture

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Abstract

Abstract We present a method for improving the signal-to-noise ratio in photothermal microscopy by optimizing the detection aperture in the spatially segmented balanced detection scheme. Experimental studies show a 1.44-fold improvement in the signal-to-noise ratio compared with the previous scheme. Consequently, the ratio is 9.6 times larger than that in conventional detection. The proposed method is implemented in a laser scanning photothermal microscope using low-cost compact laser diodes as the light source.

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Wakayama University
Japan

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