Broadband light sources, with their wide spectral coverage and stable output, play a key role in various scientific research and industrial applications.
The difference between fiber lasers and semiconductor lasers lies in the different dielectric materials used to emit laser light.
Box Optronics 760nm 10mW butterfly laser utilizes a multi-quantum well distributed feedback (MQW-DFB) structure, ensuring a precise and stable 760nm wavelength with a narrow linewidth of less than 2MHz.
TeraXion's PureSpectrum NLL series utilizes a technology that combines a phase-shifted fiber Bragg grating filter with a highly stable driver circuit. Its core principle is to monitor the laser frequency in real time using an optical discriminator.
ASE broadband light sources generate amplified spontaneous emission through rare-earth doped fibers (e.g., erbium-doped). Pumped by semiconductor lasers, excited ions emit photons, which are amplified to form a broad, flat spectrum (typically covering C-band 1530-1565nm and L-band 1565-1625nm) via gain-flattening filters.
1st-order Raman spectroscopy utilizes stimulated Raman scattering in silica optical fibers. 140 nm pump light directly amplifies C-band signal light (1530-1565 nm). The pump light vibrates and scatters in the fiber, transferring energy to the frequency of the signal light.
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