Work

Traceable state-matched radiometric calibration for gated line-scan spectroscopy at 100 kHz

Year: 2026

Type: article

Abstract: Conventional radiometric calibration assumes stable illumination and an invariant system response, whereas microsecond-gated weak-light spectroscopy is highly sensitive to synchronized gating and readout. We present a traceable state-matched framework that treats the assembled optical path and synchronized acquisition state as the calibration object. A certified integrating sphere anchors the 1-kHz response, while frozen source-level, gate-width, and gain transfers are validated on held-out states. At 100 kHz, the system operated with a nominal 10 μ s row interval and a programmed 1 μ s electrical gate setting. Because the high-speed response was 22.96% lower than at 1 kHz, qualified scalar direct anchors were established at 550 and 600 nm. Held-out errors ranged from −-1.56 to +0.40 formula units, and direct-anchor expanded uncertainties were 5.28% and 5.15% ( k = 2). Plasma measurements demonstrate calibration-linked apparent spectral radiance retrieval from weak, nonrepeatable transient events.

Source: Optics Express

DOI: 10.1364/oe.613312

Authors: Xuan-Sheng Huang, Shu-Bin Liu, Tian-Shuai Yuan, Chun-Bo Zou, Xiao-Qiang Lu

Institution: Fuzhou University

Language: English

Topic: Calibration and Measurement Techniques

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Natural Science Foundation of Fujian Province, National Science Fund for Distinguished Young Scholars