High-speed nanometer-resolved imaging vibrometer and velocimeter
Abstract
Conventional laser vibrometers are incapable of performing multidimensional vibrometry at high speeds because they build on single-point measurements and rely on beam scanning, significantly limiting their utility and precision. Here we introduce a laser vibrometer that performs high-speed multidimensional imaging-based vibration and velocity measurements with nanometer-scale axial resolution without the need for beam scanning. As a proof-of-concept, we demonstrate real-time microscopic imaging of acoustic vibrations with 1 nm axial resolution, 1200 image pixels, and 30 ps dwell time at 36.7 MHz scan rate.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 07, 2011
- Source ID
- 10.1063/1.3563707
Entities
People
- Ali Ayazi
- Ali Fard
- Ata Mahjoubfar
- Bahram Jalali
- Keisuke Goda
- Sang Hyup Kim
Organizations
- Defense Advanced Research Projects Agency
- University of California