We experimentally demonstrate operation of a laterally deformable optical nanoelectromechanical system grating transducer. The device is fabricated in amorphous diamond with standard lithographic techniques. For small changes in the spacing of the subwavelength grating elements, lossy propagating resonant modes in the plane of the grating cause a large change in the optical reflection amplitude. An in-plane motion detection sensitivity of 160fm/√Hz was measured, exceeding that of any other optical microelectromechanical system transducer to our knowledge. Calculations predict that this sensitivity could be improved to better than 40fm/√Hz in future designs. In addition to having applications in the field of inertial sensors, this device could also be used as an optical modulator.
(050.1940) Diffraction and gratings : Diffraction
(050.1950) Diffraction and gratings : Diffraction gratings
(230.3990) Optical devices : Micro-optical devices
(350.3950) Other areas of optics : Micro-optics
Bianca E. N. Keeler, Dustin W. Carr, John P. Sullivan, Thomas A. Friedmann, and Joel R. Wendt, "Experimental demonstration of a laterally deformable optical nanoelectromechanical system grating transducer," Opt. Lett. 29, 1182-1184 (2004)