Development of an LC non-resonant detector for mid-infrared photothermal (MIP) microscopy
An inductor-capacitor (LC) non-resonant photodiode detector has been developed and optimized for the signal characteristics of mid-infrared photothermal (MIP) microscopy. The detector incorporates a large photosensitive area (diameter = 5 mm), a flat frequency response, direct current-alternating current (DC-AC) separation, and a single-photodiode configuration. A gain of 2.7 × 104 is achieved for weak AC signals, with a wide-flat -3 dB frequency response ranging from 4.7 kHz to 2.1 MHz. Compared with that of built-in detector of a standard MIP instrument, the signal-to-noise ratio of MIP imaging is increased by ∼5 times. The detector is simple to operate, highly resistant to external noise, and fulfills the imaging requirements of MIP experiments.
Authors
- Zhi‐Cong Zeng (ORCID: https://orcid.org/0000-0002-5997-5043)
- Tang-Xiu Li (ORCID: https://orcid.org/0009-0006-2154-5351)
- Ting Pan
- Haixia Zhang (ORCID: https://orcid.org/0000-0003-0832-6729)
- Yuewen Zhang (ORCID: https://orcid.org/0000-0003-1864-769X)
- Jianping Yang (ORCID: https://orcid.org/0009-0002-8303-1269)
- Xiu-Jia Yang (ORCID: https://orcid.org/0009-0001-4272-511X)
- Yan‐Ping Shi (ORCID: https://orcid.org/0000-0001-6517-9556)
Institutions
- Lanzhou Institute of Chemical Physics (CN)
- University of Chinese Academy of Sciences (CN)
- Lanzhou University (CN)
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2025-12-01
- DOI
- https://doi.org/10.1063/5.0300933
- Primary Topic
- Thermography and Photoacoustic Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00