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What is a Supercontinuum Laser?
A supercontinuum laser is a laser source that generates a very broad, continuous spectrum of light from a relatively narrow-band input laser. It combines the high brightness and directionality of a laser with the broad spectral coverage typically associated with broadband light sources.
Supercontinuum generation is typically achieved by injecting intense, ultrashort laser pulses into a nonlinear optical fiber. The interaction between the light and the fiber's nonlinear properties broadens the spectrum over a wide wavelength range, making supercontinuum lasers useful for applications requiring broadband illumination or spectroscopy.
HOW a Supercontinuum Laser Works
The principle can be understood through three main steps:
Laser pulse generation
A pulsed laser produces high-peak-power optical pulses at a defined wavelength.
Nonlinear spectral broadening
The pulses propagate through a nonlinear optical fiber, where effects such as self-phase modulation and other nonlinear interactions progressively broaden the optical spectrum.
Broadband output
The resulting supercontinuum provides a wide range of wavelengths from a single optical source. Its spectral characteristics can be tailored to the requirements of the application.
