TY - JOUR

T1 - Dispersive Fourier Transform Spectrometer Based on Mode-Locked Er-Doped Fiber Laser for Ammonia Sensing

AU - Апрелов, Николай Андреевич

AU - Ватник, Илья Дмитриевич

AU - Харенко, Денис Сергеевич

AU - Редюк, Алексей Александрович

N1 - This research was funded by the Ministry of Education and Science of the Russian Federation (FSUS-2021-0015) and by the state budget of IAE SB RAS (project No 121030500067-5).

PY - 2024/1

Y1 - 2024/1

N2 - Dispersive Fourier transform (DFT) has emerged as a powerful technique, enabling the transformation of spectral information from an optical pulse into a temporal waveform. This advancement facilitates the implementation of absorption spectroscopy using a single-pixel photodetector and a pulsed laser, particularly effective when operating on wavelengths near the absorption lines of the gas under study. This paper introduces a DFT-spectrometer employing a mode-locked tunable fiber laser with the central wavelength of 1531.6 nm. We demonstrate fast acquisition NH3 absorption spectroscopy with a 0.2 nm spectral resolution, achieved through the utilization of the HITRAN database for estimating ammonia concentrations. Alongside the successful demonstration of NH3 absorption spectroscopy, we explore practical limiting factors influencing the system’s performance. Furthermore, we discuss potential avenues for enhancing sensitivity and spectral resolution, aiming to enable more robust and accurate gas sensing applications.

AB - Dispersive Fourier transform (DFT) has emerged as a powerful technique, enabling the transformation of spectral information from an optical pulse into a temporal waveform. This advancement facilitates the implementation of absorption spectroscopy using a single-pixel photodetector and a pulsed laser, particularly effective when operating on wavelengths near the absorption lines of the gas under study. This paper introduces a DFT-spectrometer employing a mode-locked tunable fiber laser with the central wavelength of 1531.6 nm. We demonstrate fast acquisition NH3 absorption spectroscopy with a 0.2 nm spectral resolution, achieved through the utilization of the HITRAN database for estimating ammonia concentrations. Alongside the successful demonstration of NH3 absorption spectroscopy, we explore practical limiting factors influencing the system’s performance. Furthermore, we discuss potential avenues for enhancing sensitivity and spectral resolution, aiming to enable more robust and accurate gas sensing applications.

KW - NH3 absorption spectroscopy

KW - dispersive Fourier transform spectrometer

KW - gas sensing

KW - mode-locked fiber laser

KW - optical pulse

KW - sensitivity enhancement

KW - spectral resolution

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85183403059&origin=inward&txGid=54813aac5b79b8f4c6fd7fe01bcf18ac

UR - https://www.mendeley.com/catalogue/94201efa-e745-304a-afa4-2c0c382e33ff/

U2 - 10.3390/photonics11010045

DO - 10.3390/photonics11010045

M3 - Article

VL - 11

JO - Photonics

JF - Photonics

SN - 2304-6732

IS - 1

M1 - 45

ER -