fibre lasers and frequency combs, and discusses how plasmonics can be exploited in the mid-infrared regime.

Suppose that you want to generate an IR remote’s signal ... this carrier modulation easily enough yourself. Set the PWM frequency to 38 kHz and the duty cycle somewhere in the 33%-50% range ...

Using this method, IISC team were able to up-convert infrared light of wavelength around 1550nm to 622nm visible light. “This process is coherent – the properties of the input beam are ...