The MSV-400 Microscope Scanning Vibrometer is the successor to the award-winning MSV-300 for full-field vibration analysis of very small objects such as MEMS optical switches. Based on the laser Doppler principle, a HeNe laser maps the vibrational response of the structure with a lateral resolution of down to 1 µm. MSV-400 can achieve picometer vibration resolution and up to 20 MHz bandwidth.