DOI: 10.1063/1.1628840. Homodyne detection technique using spontaneously generated reference signal in picosecond thermoreflectance measurements

Homodyne detection technique using spontaneously generated reference signal in picosecond thermoreflectance measurements

10.1063/1.1628840

Crossref journal-article

AIP Publishing

Review of Scientific Instruments (317)

Abstract

A new detection technique for picosecond thermoreflectance measurements has been developed. Conventional picosecond thermoreflectance measurements detect the signal amplitude of a reflected probe laser beam synchronized with the modulation frequency of the pump laser beam using a lock-in amplifier. Our new detection technique uses the signal phase of the lock-in output instead of the signal amplitude. Thermoreflectance signals for molybdenum thin films deposited on glass substrates were observed at room temperature. The signal-to-noise ratio of the phase detection was about four times better than that of the amplitude detection. The signal phase detected by this model is insensitive to fluctuation of both pump and probe beams. According to this technique, picosecond thermoreflectance measurements can apply not only to single layer metal thin films of around 100 nm thickness, but also to thicker metal films, metal–nonmetal multilayer thin films, and many other thin films.

Bibliography

Taketoshi, N., Baba, T., Schaub, E., & Ono, A. (2003). Homodyne detection technique using spontaneously generated reference signal in picosecond thermoreflectance measurements. Review of Scientific Instruments, 74(12), 5226â5230.

Authors 4

Naoyuki Taketoshi (first)
Tetsuya Baba (additional)
Emmanuel Schaub (additional)
Akira Ono (additional)

References 19 Referenced 38

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{'key': '2024020519564379000_r4'}
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{'key': '2024020519564379000_r18'}
{'key': '2024020519564379000_r19', 'first-page': '315', 'volume': '463', 'year': '1999', 'journal-title': 'AIP Conf. Proc.'} / AIP Conf. Proc. (1999)

Dates

Type	When
Created	21 years, 8 months ago (Nov. 22, 2003, 6:53 p.m.)
Deposited	1 year, 6 months ago (Feb. 5, 2024, 3:53 p.m.)
Indexed	2 weeks, 5 days ago (Aug. 3, 2025, 12:22 a.m.)
Issued	21 years, 8 months ago (Dec. 1, 2003)
Published	21 years, 8 months ago (Dec. 1, 2003)
Published Print	21 years, 8 months ago (Dec. 1, 2003)

Funders 0

None

BibTeX

@article{Taketoshi_2003, title={Homodyne detection technique using spontaneously generated reference signal in picosecond thermoreflectance measurements}, volume={74}, ISSN={1089-7623}, url={http://dx.doi.org/10.1063/1.1628840}, DOI={10.1063/1.1628840}, number={12}, journal={Review of Scientific Instruments}, publisher={AIP Publishing}, author={Taketoshi, Naoyuki and Baba, Tetsuya and Schaub, Emmanuel and Ono, Akira}, year={2003}, month=dec, pages={5226–5230} }

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