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Single-frequency fiber lasers using rare-earth-doped silica

Single-frequency fiber lasers using rare-earth-doped silica

June 27, 2015: A single-frequency laser operates with only one longitudinal mode, and thus can emit quasi-monochromatic radiation with a very narrow linewidth and low noise. Such lasers, both in continuous waveform and pulsed operations, are of interest for interferometric sensing, coherent light detection and ranging, laser spectroscopy, and laser nonlinear frequency conversions. The distributed Bragg reflector (DBR) fiber laser ...

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Mitsubishi Electric to launch red laser diode for projectors

Mitsubishi Electric to launch red laser diode for projectors

June 25, 2015: Mitsubishi Electric Corporation announced today that it will launch a 638-nanometer-(nm)-wavelength red laser diode (LD) offering pulse operation output power of 2.5 W, the world?s highest level among 638-nm LDs used as light sources for projectors. Sales will begin this September 1. The 638-nm red laser light and highly efficient operation of the LD contributes to the ...

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4Gbps data rate with GaN laser diode demonstrated

4Gbps data rate with GaN laser diode demonstrated

June 13, 2015: A team of researchers from the University of California, Santa Barbara, has demonstrated a record 4Gbps data rate at room temperature with a commercial high power 450nm GaN laser diode. Visible light communication (VLC) is being considered to dramatically increase wireless data traffic constricted by limited available RF spectrum. Additional advantages include the broad range of available ...

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