EGU22-1540, updated on 27 Mar 2022
https://doi.org/10.5194/egusphere-egu22-1540
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

High and flat spectral responsivity of quartz tuning fork used as infrared photodetector in tunable diode laser spectroscopy

Tingting Wei1,2,3, Andrea Zifarelli2,4, Stefano Dello Russo2,4, Hongpeng Wu2,3, Giansergio Menduni4,5, Pietro Patimisco4, Angelo Sampaolo4, Vincenzo Vincenzo2,4, Lei Dong2,3, and Weidong Chen1
Tingting Wei et al.
  • 1Laboratoire de Physicochimie de l'Atmosphère, Université du Littoral Côte d'Opale, Dunkerque 59140, France
  • 2State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China
  • 3Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 4PolySense Lab-Dipartimento Interateneo di Fisica, University and Politecnico of Bari, Via Amendola 173, 70126 Bari, Italy
  • 5Photonics Research Group, Department of Electrical and Information Engineering, Politecnico di Bari, 70126 Bari, Italy

In the past decade, the rapid development of infrared laser technology has led to an increasing demand for photodetectors with high sensitivity and a wide operative spectral range suitable for spectroscopic applications [1-2]. In this work, we report on the performance of a custom quartz tuning fork (QTF), having a fundamental resonance frequency of 9.78 kHz and quality factor of 11500 at atmospheric pressure, which was used as a sensitive and broadband infrared photodetector for laser absorption spectroscopy [3]. Fourier infrared spectrometer was used to characterize the infrared absorption capacity of quartz material at the wavelength of 1-20 μm. Wide spectral response capability of the used QTF detector was investigated based on tunable diode absorption spectroscopy using lasers operating at five different wavelengths (1.6-10.35 μm). A spectrally flat responsivity of ~2.2 kV/W was demonstrated, corresponding to a noise-equivalent power of 1.5 nW/Hz1/2, without employing any thermoelectrical cooling systems. In order to compensate for the drift of inherent characteristics (resonance frequency and quality factors) of the QTF detector, a heterodyne detection scheme was implemented to retrieve the resonance properties of the QTF detector together with the gas concentration in a single, fast measurement [4]. Experimental details including theoretical simulation and application demonstration will be discussed and presented.

Acknowledgments

The authors acknowledge financial support from National Key R&D Program of China (No. 2019YFE0118200), THORLABS GmbH, within PolySense, a joint-research laboratory, and the National Natural Science Foundation of China (Nos. 62075119 and 61805132).

References

[1] L. Dong, F. K. Tittel, C. Li, N. P. Sanchez, H. Wu, C. Zheng, Y. Yu, A. Sampaolo, and R. J. Griffin, Opt. Express 24 (2016) A528-A535.

[2] S. Dello Russo, A. Zifarelli, P. Patimisco, A. Sampaolo, T. Wei, H. Wu, L. Dong, and V. Spagnolo, Opt. Express 28 (2020) 19074-19084.

[3] T. Wei, A. Zifarelli, S. Dello Russo, H. Wu, G. Menduni, P. Patimisco, A. Sampaolo, V. Spagnolo, L. Dong, Appl. Phys. Rev. 8 (2021) 041409.

[4] H. Wu, L. Dong, H. Zheng, Y. Yu, W. Ma, L. Zhang, W. Yin, L. Xiao, S. Jia, and F. K. Tittel, Nat. Commun. 8 (2017) 15331.

How to cite: Wei, T., Zifarelli, A., Dello Russo, S., Wu, H., Menduni, G., Patimisco, P., Sampaolo, A., Vincenzo, V., Dong, L., and Chen, W.: High and flat spectral responsivity of quartz tuning fork used as infrared photodetector in tunable diode laser spectroscopy, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-1540, https://doi.org/10.5194/egusphere-egu22-1540, 2022.