Optical radiation emitted from a metal-coated fiber tip apex when it emerges from a liquid into the air was measured. A strong enhancement of the output radiation and its strong dependence on the relative position of the tip to a liquid surface were observed. This phenomenon permits in situ recording of nanometric vibrations of the liquid and provides a basis for development of various ultrasensitive vibration detecting sensors.
© 2006 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: April 3, 2006
Revised Manuscript: July 6, 2006
Manuscript Accepted: July 7, 2006
T. Abrahamyan, E. Janunts, and Kh. Nerkararyan, "Detecting nanometric vibrations of a liquid surface by a metal-coated fiber tip," Appl. Opt. 45, 8194-8196 (2006)