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"Infrared and Laser Engineering" Journal [Invited Article]: Wavefront Sensing Technology and Applications Based on Quadriwave Lateral Shearing Interferometry
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Quantitative Phase Imaging Solutions
Quantitative Phase Imaging Solutions 01 Label-Free 3D Live Cell Detection Quadriwave Lateral Shearing Interferometry (QWLSI) in Label-Free 3D Live Cell Detection: QWLSI is a powerful technique for label-free, 3D live cell detection. It allows for the quantitative measurement of the phase shift induced by biological samples, providing detailed information about their morphology and refractive index without the need for fluorescent labels or other invasive stains. This makes QWLSI particularly va
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4-Wave LateralShearing Interferometry Testing Technology: Glass Plate 4-Wave LateralShearing Interferometry Method
Glass plates are a common type of device used to generate lateral shear in 4-Wave LateralShearing Interferometry. Due to their thickness, reflections from the front and back surfaces of the plate produce a certain lateral displacement. Depending on the plate's function, these methods can be categorized into the shearing beamsplitter plate method and the insertable plate method.
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4-Wave LateralShearing Interferometry: Basic Concepts
4-Wave LateralShearing Interferometry [1] is a high-precision optical measurement technique that utilizes the interference of two wavefronts of identical shape, which are laterally shifted by a small amount, in their overlapping region. The most significant feature of a 4-Wave LateralShearing Interferometry system, compared to traditional Twyman-Green or Fizeau interferometers, is that it doesn't require a reference optical path or a reference mirror.
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How to get a stable optical frequency comb?
The optical frequency comb is like a light ruler with a precise scale. Ordinary instruments use millimeters and milliseconds as units, while the accuracy of the optical frequency comb exceeds nanometers in length measurement and exceeds femtoseconds and even reaches attoseconds in time.
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"Ghost imaging" technology enables ultra-high-resolution imaging of moving objects
Super-resolution techniques, also known as nanoscopy, achieve nanoscale resolution by overcoming the diffraction limit of light. Although nanoscopy can capture images of individual molecules inside cells, it has been difficult to apply to live cell imaging because it requires hundreds or thousands of imaging windows to reconstruct the image, a process that is too slow to capture rapidly changing dynamics. Now, a new nanotechnology has the potential to capture biological processes occurring insid
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The application of femtosecond four-wave mixing technology brings new sparks to the research of femtosecond laser technology
Femtosecond ultrafast laser is one of the most powerful research tools developed by laser science in the past thirty years. Its rapid development and the expansion and deepening of femtosecond ultrafast laser-related applications feed back and promote each other.
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