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Quantum Cascade Lasers

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Quantum Cascade Lasers

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A wide range of industries, including biomedical, defense, and sensing, utilize tunable mid-infrared lasers that, until recently, have required some rather exotic system configurations. These have historically ranged from free-electron lasers, which require a particle accelerator, to multistage Raman shifted alexandrite lasers, requiring an oscillator-amplifier configuration followed by both deuterium and hydrogen high-pressure gas cells. Fortunately, over the past twenty years quantum cascade laser (QCL) technology has matured into the laser of choice for long-wavelength operation.

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