title: Real-time nanometer-vibration measurement with a self-mixing microchip solid-state laser.
abstract: Nanometer vibration analysis of a target has been demonstrated by a self-aligned optical feedback vibrometry technique that uses a laser-diode-pumped microchip solid-state laser. The laser output waveform, which was modulated through interference between a lasing field and an extremely weak (<- 100-dB) frequency-modulated (FM) feedback field, was analyzed by the Hilbert transformation to yield the vibration waveform of the target. Experimental signal characteristics have been reproduced by numerical simulations. Real-time vibration measurement has also been achieved with a simple FM demodulation circuit.
authors.forename: Kenju
authors.initials: K
authors.lastname: Otsuka
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Abe
authors.forename: Jing-Yuan
authors.initials: JY
authors.lastname: Ko
authors.forename: Tsong-Shin
authors.initials: TS
authors.lastname: Lim