Affiliation:
1. Wroclaw University of Science and Technology
2. University of Chinese Academy of Sciences
3. Chinese Academy of Sciences
Abstract
In this paper, we experimentally asses the performance of wavelength modulation spectroscopy-based spectrometers incorporating 1.3 m-long gas absorption cells formed by an antiresonant hollow core fiber (ARHCF) and a Kagome hollow core fiber. To evaluate the discrepancies with minimum methodology error, the sensor setup was designed to test both fibers simultaneously, providing comparable measurement conditions. Ethane (C2H6) with a transition located at 2996.88 cm−1 was chosen as the target gas. The experiments showed, that due to better light guidance properties, the ARHCF-based sensor reached a minimum detection limit of 4 ppbv for 85 s integration time, which is more than two times improvement in comparison to the result obtained with the Kagome fiber.
Funder
Narodowe Centrum Nauki
National Key Research and Development Program of China
Chinese Academy of Sciences
National Natural Science Foundation of China
International Science and Technology Cooperation Programme
South China University of Technology, Key Laboratory of Fiber Laser Materials and Applied Techniques
STI2030 – Major Projects
Subject
Atomic and Molecular Physics, and Optics