A pulse in which the wavelength changes during the duration of the pulse. In a diode laser, chirp arises from direct modulation of the laser, because the refractive index changes with the electron ...

When we hear a bird chirp, it is producing a burst of sound the pitch of which changes from the start of the sound to the end. In a similar way, the colour of a chirped laser pulse changes from the ...

Whether by clever intent or accident, the comparison to the changing frequency in the transmitter pulse, and the chirping of a bird, is both amusing and fitting. CHIRP systems have been employed in ...