Zobrazeno 1 - 10
of 18
pro vyhledávání: '"R. J. Mansfield"'
Publikováno v:
Applied optics. 21(23)
A new method of obtaining the refractive-index profile of an optical fiber preform is described. The technique is based on the refraction of light emerging from an endface cut normal to the preform axis. Two forms have been developed. In one, quantit
Publikováno v:
Journal of Applied Physics. 69:3853-3859
A detailed theoretical and experimental study of laser‐induced density and temperature changes, and flow‐reorientation effects in the nematic and smectic phases of liquid crystals is presented. Using picosecond lasers, the initial nanosecond dyna
Autor:
R J, Mansfield, R D, Thomas
Publikováno v:
Postgraduate medical journal. 77(907)
Autor:
Iam-Choon Khoo, Robert R. Michael, Robert G. Lindquist, Peter G. LoPresti, Ping Zhou, R. J. Mansfield
Publikováno v:
Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors.
We present the results of a detailed study of the optical nonlinearities of liquid crystals spanning the picosecond-millisecond time scale. These nonlinearities are utilized in some optical limiting/switching applications with infrared and also visib
Publikováno v:
Digest on Nonlinear Optics: Materials, Phenomena and Devices.
Publikováno v:
Optical Society of America Annual Meeting.
The results of a detailed study of the dynamics of switching from a total-internal-reflection to a transmission state at a prisms-cladded liquid crystal film are presented. These results are in good agreement with recently published theory based on a
Autor:
Iam-Choon Khoo, R. R. Michael, Francesco Simoni, Ping Zhou, R. J. Mansfield, Robert G. Lindquist, Gabriella Cipparrone
Publikováno v:
Journal of the Optical Society of America B. 8:1464
We present experimental results concerning the process of switching from the total-internal-reflection to the transmission state at a glass–nematic-liquid-crystal interface. The results are in agreement with our detailed theory of the dynamics of i
Publikováno v:
IEEE Journal of Quantum Electronics. 25:1755-1759
An analysis and experimental results on optical switching from a transmission to a total reflection state, using a nematic film bounded by two prisms, are presented. This configuration provides a useful scheme for optical limiting applications with a
Publikováno v:
Optical and Quantum Electronics. 14:483-499
Snyder's equivalent step-index method is extended to the case of graded profiles with a depressed cladding. This method is then used to determine the limit of monomode operation. Comparison with the results obtained by an exact numerical technique is
Autor:
Peter G. LoPresti, Robert G. Lindquist, Iam-Choon Khoo, Ping Zhou, R. J. Mansfield, R. R. Michael
Publikováno v:
SPIE Proceedings.
We have developed a detailed theory for the two possible modes of switching at a nonlinear film bounded by two dielectric media. Because of the fact that the film is thin, and the high reflectivity of the boundary surfaces near the total internal ref