Single device for laser source measurements from the ultraviolet to the far infrared

We propose a new device, based on an array of micromechanical cantilevers, that measures both the wavelength and the optical power of a laser source w ith constant efficiency over a large spectral interval from the ultraviolet to the far infrared. To measure the wavelength, the thickness of the canti levers must vary linearly along the array. The characteristics of this devi ce are calculated, and an example is given for the design of an array of Si cantilevers that cover the 0.33-11-mu m spectral range. (C) 2000 Optical S ociety of America OCIS codes: 040.1240, 230.0040, 230.5160.