Second-harmonic generation in optically trapped nonlinear particles with pulsed lasers.

Pulsed lasers are used for simultaneous single-beam three-dimensional optical trapping of and second-harmonic generation in 50-100-nm nonlinear particles. The emission power of the frequency-doubled light, the trapping stability, and the particle degradation are investigated for KTP and LiNbO(3) particles trapped by 25-kHz-repetition-rate Q-switched Nd:YAG and 76-MHz mode-locked Ti:sapphire l a s e r s . Typically 1 pW-10 nW of frequency-doubled light is detected from stably trapped particles. The particles may be used as probes for nonintrusively scanned near-field optical microscopy.

[1]  D. J. DiGiovanni,et al.  Image contrast in near‐field optics , 1992 .

[2]  K. Schütze,et al.  Force generation of organelle transport measured in vivo by an infrared laser trap , 1990, Nature.

[3]  A. Hall.  Applied Optics. , 2022, Science.

[4]  Hiroshi Masuhara,et al.  Three‐dimensional optical trapping and laser ablation of a single polymer latex particle in water , 1991 .

[5]  H. Inaba,et al.  Observation of second harmonic generation from optically trapped microscopic LiNbO/sub 3/ particle using Nd:YAG laser , 1992 .

[6]  H M Hertz,et al.  Two-color trapped-particle optical microscopy. , 1994, Optics letters.

[7]  P. Lorrain,et al.  Electromagnetic fields and waves , 1970 .

[8]  W. Heller.  Theoretical Investigations on the Light Scattering of Spheres. XVI. Range of Practical Validity of the Rayleigh Theory , 1965 .

[9]  Joseph Zyss,et al.  Nonlinear optical properties of organic molecules and crystals , 1987 .

[10]  G J Brakenhoff,et al.  Micromanipulation by "multiple" optical traps created by a single fast scanning trap integrated with the bilateral confocal scanning laser microscope. , 1993, Cytometry.

[11]  Hans M. Hertz,et al.  Trapped-particle Optical Microscopy , 1992 .

[12]  A. Ashkin,et al.  Optical trapping and manipulation of viruses and bacteria. , 1987, Science.

[13]  H. Vanherzeele,et al.  Magnitude of the nonlinear-optical coefficients of KTiOPO(4). , 1992, Optics letters.

[14]  Steven M. Block,et al.  Optical tweezers : a new tool for biophysics , 1990 .

[15]  Michael W. Berns,et al.  Laser trapping in cell biology , 1990 .

[16]  Stefan Andersson-Engels,et al.  Time‐ and wavelength‐resolved spectroscopy in two‐photon excited fluorescence microscopy , 1994 .

[17]  S. Chu,et al.  Observation of a single-beam gradient force optical trap for dielectric particles. , 1986, Optics letters.

[18]  Hiroshi Masuhara,et al.  Laser-Scanning Micromanipulation and Spatial Patterning of Fine Particles , 1991 .

[19]  S. Chandrasekhar.  Stochastic problems in Physics and Astronomy , 1943 .