We present results showing that, when it is used as a photodetector, a light-emitting diode (LED) has a power-dependent response that can be used for sensitive detection and characterization of picosecond and femtosecond laser pulses. A characterization of a typical LED is presented at 800 nm, and we demonstrate how this effect can be used to construct an extremely compact novel autocorrelator based on a Wollaston prism.
© 1997 Optical Society of America
D. T. Reid, M. Padgett, C. McGowan, W. E. Sleat, and W. Sibbett, "Light-emitting diodes as measurement devices for femtosecond laser pulses," Opt. Lett. 22, 233-235 (1997)