Results 1 to 10 of about 1,251,586 (168)
A Control and Detecting System of Micro-Near-Infrared Spectrometer Based on a MOEMS Scanning Grating Mirror [PDF]
Micromachines, 2018 Based on the scanning grating mirror we developed, this paper presents a method of the precise control of a scanning grating mirror and of high-speed spectrum data detection.
Haitao Liu +5 more
doaj +7 more sources
Modeling of MOEMS electromagnetic scanning grating mirror for NIR micro-spectrometer [PDF]
AIP Advances, 2016 In this paper, the mathematical model is developed for researching the detailed electromagnetic mechanism of MOEMS scanning mirror. We present the relationship between spectral range and optical scanning angle.
Ying Zhou +3 more
doaj +4 more sources
A Tunable Catadioptric Spectrometer with Bragg-Condition-Preserving Rotation for High-Resolution Spectroscopy [PDF]
SensorsHigh-throughput and compact volume phase holographic (VPH) grating transmission spectrometers are widely employed in scientific research, agriculture, and industrial applications.
Zhongyi Yao +3 more
doaj +2 more sources
Micromachines, 2021 Based on the scanning grating mirror developed by us, this paper presents a method for precise control of the scanning grating mirror and high-speed spectrum data acquisition.
Haitao Liu +5 more
doaj +1 more source
Sensors, 2022 Broadband wavelength-swept lasers (WSLs) are widely used as light sources in biophotonics and optical fiber sensors. Herein, we present a polygonal mirror scanning wavelength filter (PMSWF)-based broadband WSL using two semiconductor optical amplifiers ...
Gi Hyen Lee +7 more
doaj +1 more source
Sensors, 2021 We report the design of a high-efficiency spectral-domain spectrometer with cylindrical optics for line scanning optical coherence tomography (OCT). The spectral nonlinearity in k space (wavenumber) lowers the depth-dependent signal sensitivity of the ...
Sevin Samadi +2 more
doaj +1 more source
Miniature Broadband NIR Spectrometer Based on FR4 Electromagnetic Scanning Micro-Grating
Micromachines, 2020 This paper presents a miniaturized, broadband near-infrared (NIR) spectrometer with a flame-retardant 4 (FR4)-based scanning micrograte. A 90° off-axis parabolic mirror and a crossed Czerny–Turner structure were used for creating an astigmatism-free ...
Liangkun Huang +5 more
doaj +1 more source
Miniaturized NIR Spectrometer Based on Novel MOEMS Scanning Tilted Grating
Micromachines, 2018 This paper presents a dispersive near-infrared spectrometer with features of miniaturization, portability and low cost. The application of a resonantly-driven scanning grating mirror (SGM) as a dispersive element in a crossed Czerny–Turner ...
Jian Huang +5 more
doaj +1 more source
PhotonicsOptical profilometry based on heterodyne interferometry was used to characterize the lateral surface topography of reflective surfaces with microstructures. A 633 nm laser beam is split into an unshifted object beam and a reference beam that is frequency-
Anuar B. Beltrán-González +3 more
doaj +1 more source
Sub-second a-scan acquisition using marginal spectral-domain quantum optical coherence tomography
Scientific ReportsWe report an optimized implementation of spectral-domain quantum optical coherence tomography (SD-QOCT) capable of acquiring axial scans (A-scans) of multilayer samples in the absence of mechanical scanning, at an unprecedented speed.
P. D. Yepiz-Graciano +4 more
doaj +1 more source