We show that fiber-delivered, pulsed laser propulsion of glass microspheres, as observed in a recent Letter [Opt. Lett. 36, 1996 (2011).], due to only radiation pressure cannot explain the measured maximum velocity of microspheres. Our considerations, based on the reported results, indicate that the main momentum transfer mechanism is due to mass recoil that very likely follows a dielectric breakdown near or on the surface of the microsphere.
© 2012 Optical Society of America
Optical Tweezers or Optical Manipulation
Original Manuscript: July 29, 2011
Manuscript Accepted: September 19, 2011
Published: February 24, 2012
Tomaž Požar and Janez Možina, "Observation of microsphere movement driven by optical pulse: comment," Opt. Lett. 37, 902-902 (2012)