High Speed Pump-Probe Spectroscopy of Si3 N4 -based Micromechanical Systems

O. RISTOW; M. HETTICH; A. BRUCHHAUSEN; S. BÄCHLE; A. ERBE; E. SCHEER; T. DEKORSY

Munich

Conferencia; The European Conference on Lasers and Electro-Optics and the XIIth European Quantum Electronics Conference (CLEO®/Europe-EQEC 2011)(CLEO/EQEC 2011)); 2011

European Physical Society

In this work we present first time domain all optical investigations of a single double-clamped Si3/N4 cantilever resonator, using high speed asynchronous optical sampling (ASOPS). This method is based on two asynchronously linked femto-second unidirectional ring lasers of ∼1 GHz repetition rate. One laser provides the pump pulse while the other provides the probe pulse. The time delay is realized by introducing a 5 kHz offset in the repetition rates of the two lasers without requiring a mechanical delay line.