Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The transmission spectrum of a narrow-band interference filter is crucial and highly influenced by factors such as the temperature and angle, thus requiring precise and online measurements. The traditional method of measuring the transmission spectrum of an interference filter involves the use of a spectrometer, but the accuracy of this method is limited. Moreover, placing a narrow-band interference filter inside a spectrometer hinders real-time online measurements. To address this issue, there is demand for high-precision online spectral testing methods. In response to this demand, we propose and experimentally validate a fine spectral characterization method for narrow-band interference filters. This method uses a narrow-linewidth tunable laser, achieving a spectral resolution in the MHz range for online testing. Two types of narrow-band interference filters were tested using the constructed laser spectroscopy experimental system, obtaining a transmission spectrum with a spectral resolution of 318 MHz. In comparison to spectrometer-based methods, our proposed method demonstrates higher spectral accuracy, enables online measurements, and provides more accurate measurements for special spectral interference filters. This approach has significant application value and promising development prospects.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10891756 | PMC |
| http://dx.doi.org/10.3390/s24041152 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Thermodynamic mechanism in colored glass substrates of interference filters under continuous-wave laser irradiation.
Sci Rep
August 2025
State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an, 710024, China.
The ablation perforation damage of double-sided coated narrow-band filters based on RG-850 colored glass under out-of-band laser irradiation is investigated. A temperature-triggered nonlinear absorption mechanism is identified where substrate absorption sharply increases beyond a critical temperature. To quantify the resulting energy deposition dynamics, the multiple reflection model is employed, revealing the absorption enhancement by partial-transmission/high-reflection coatings.
View Article and Find Full Text PDFHolographic vibrometry is a family of interferometric methods for contactless, full-field vibration measurements. Harmonic surface vibrations with high frequencies (hertz to upper megahertz regime) and low displacements (sub-nanometer to micrometer) as found in micro-electromechanical systems can be characterized. Using frequency shifting, it is possible to obtain static interference or low-frequency beats between the reference arm and one of the sidebands generated by the vibration in the object arm.
View Article and Find Full Text PDFUnidirectional guided resonance continuum of Dirac bands in WS bilayer metasurfaces.
Nat Nanotechnol
August 2025
Department of Physics, Korea University, Seoul, Republic of Korea.
Unidirectional guided resonances are crucial for enhancing the efficiency and performance of various photonic devices, such as couplers and antennas. However, unidirectional guided resonances have been reported only under discrete frequency-wavevector points on a dispersion band, which require accidental interference configurations. Here we show that unidirectional guided resonances can continuously exist across nearly the entire band structure in glide-symmetric bilayer metasurfaces.
View Article and Find Full Text PDFEnhancing Interferometry Using Weak Value Amplification with Real Weak Values.
Phys Rev Lett
February 2025
University of Ottawa, Department of Physics and Nexus for Quantum Technologies, 25 Templeton Street, Ottawa, Ontario, Canada K1N 6N5.
We introduce an ultrasensitive interferometric protocol that combines weak value amplification (WVA) with traditional interferometry. This protocol WVA+interferometry uses weak value amplification of the relative delay between two paths to enhance interferometric sensitivity. As an example, we demonstrate a proof-of-principle experiment that achieves few-attosecond timing resolution (few nanometer path length resolution) with a double-slit interferometer using only common optical components.
View Article and Find Full Text PDFSelf-recoverable broadband near infrared mechanoluminescence from BaGaO:Cr using a multi-site occupation strategy.
Mater Horiz
June 2025
School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, State Key Laboratory of Luminescent Materials and Devices
Near infrared mechanoluminescence (NIR-ML) materials have attracted the attention of researchers due to their unique advantages, such as high resistance to bright-field interference and higher penetration depth into biological tissues. However, the reported NIR-ML materials are mainly rare-ion-activated narrow-band emitters. In this work, we report a NIR-ML material of BaGaO:Cr by a solid state reaction method.
View Article and Find Full Text PDF