How to change the wavelength of a laser diode
How can the wavelength of a laser diode be tuned? Laser diodes are commonly tuned by changing their temperature, for example with a thermoelectric cooler. This modifies the gain spectrum and shifts the output wavelength, typically achieving a tuning range of a few nanometers. Whether you are pumping a Yb-doped fiber laser, driving a solid-state crystal, performing Raman spectroscopy or locking an atomic transition line like Rubidium at. This method is often applied to lasers with operation on multiple resonator modes, where the "center of gravity" of the.
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