The choice of semiconductor material is determined by its optical properties and its bandgap energy, which determines the emission wavelength. Laser diodes also have very stringent material ...

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These first lasers were made of gallium aluminium arsenide (GaAlAs) and operated at a wavelength of 0.8 μm. In 1976, the first optical transmission system was put into service, operating over 11 ...

This diffraction limit is determined by the laser wavelength and the optical system's ability to focus the laser beam. The researchers are now working to further improve the writing speed ...

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School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University, Zhengzhou 450000, China ...

laser cooling and trapping, building HeNe lasers, holographic and interferometric measurements, and precision measurements with physical optics. He has recently worked with talented Bethel students to ...

“In lasers, wavelength is measured in micrometres, which determines performance and application,” said Deividas Buinovskis, CTO of Altechna. “A 1µm laser is ideal for precision targeting and material ...

Border Patrol aircraft have been targeted by lasers at least six times since October, the U.S. Customs and Border Protection said Tuesday. The agency said its Air and Marine Operations helicopter ...

These filters must have very narrow transmission bands to pass only those laser wavelengths being used in the communications. Their transmission efficiency must also be very high (in terms of ...