The current main detection methods for packaging chip defects with small size, dense wiring, and high integration have drawbacks such as low accuracy and long cycle time. To compensate for the shortcomings of traditional detection
This paper introduces a low-thickness sandwich waveguide structure comprising silicon nitride -sapphire -silicon nitride layers. By exploiting its dispersion wave radiation effect and mid-infrared phase matching condition, combine
The cross-sectional scanning tunneling microscopy (XSTM) technique was used to study the cleaved surface of Hg0.72Cd0.28Te grown by molecular beam epitaxy. Scanning tunnel spectroscopy (STS)’s measurements show that the width of z
The influence of growth conditions of liquid phase epitaxy on the composition gradient of HgCdTe was studied, and the growth model of liquid phase epitaxy (LPE) of HgCdTe was established. HgCdTe with positive composition gradient
The photogating effect based on the vertical structure of a two-dimensional material allows high-sensitivity and broad-spectrum photodetector. A high-sensitivity photodetector based on the vertical heterostructure of indium seleni
This study investigates an asymmetric tip design for a far-infrared metamaterial aimed at enhancing the Q factor and detection sensitivity. Employing the conventional double-split square ring resonator as a model, we conducted the
In this letter, an In0.53Ga0.47As/In0.52Al0.48As InP-based HEMT with fT > 400 GHz was designed and fabricated successfully. A narrow gate recess technology was used to optimize the parasitic resistances. The gate length is 54.4 nm
The homodyne mixing system is used to characterizing the performance of terahertz superconducting kinetic inductance detectors (KIDs). However, homodyne mixing systems still have issues such as mixer imbalance, measurement system
Generally, the porosity of traditional Chinese medicine is measured by the destructive method of density measurement, but there is a lack of non-destructive quantification methods. As one important non-destructive method, terahert
A homodyne detection system to acquire the thickness of silicon wafers is constructed and described. By harnessing the relationship between the transmission phase change of a 4.3-THz light beam and the incident angle controlled by
Metasurface provide a new platform for studying planar and ultrathin optical components. The traditional geometric-phase-based metalens are limited to the polarization locking, which inevitably hinders its function in multiplexing
As the connecting spectral band of visible-near infrared and thermal infrared, mid-infrared (MIR) combines the reflective characteristics of short-wave radiation and the emissive characteristics of long-wave radiation, which is of
With the advantage of high sensitivity and high repetition rate, spaceborne photon counting Lidar has shown great application in ocean areas. The photon counting detector can not only respond to the weak echo signal, but is also s
The spaceborne light detection and ranging (LiDAR), as a novel active remote sensing technology, offers possibilities for global diurnal research. In this study, global sea surface chlorophyll-a (Chla) concentrations were inverted
This paper describes the design and fabrication of one kind of dichroic beam-splitter that operates in an ultra-broadband spectral range from visible to longwave infrared regions simultaneously. The use of metal-dielectric coating
Image impulse noise removal is essential for obtaining high-quality images. A novel pixel gradients-based adaptive iterative median filter is proposed to remove image impulse noise by utilizing the principles of thermal infrared c