1
Robert R Alfano, Scott Alfano, Quan Zhen Wang, Ping Pei Ho: Remote-controllable, micro-scale device for use in in vivo medical diagnosis and/or treatment. Kriegsman & Kriegsman, May 29, 2001: US06240312 (492 worldwide citation)

Remote-controllable, micro-scale, robotic device for use in diagnosing and/or treating abnormalities inside a human body in vivo. The device has a length from 0.1 mm to 10 mm and can be introduced into the body either from natural body openings or by injection into the blood stream. Once inside the ...


2
Robert R Alfano, Ping Pei Ho, Leming Wang: Ultrafast optical imaging of objects in a scattering medium. Kriegsman & Kriegsman, December 6, 1994: US05371368 (76 worldwide citation)

A system for imaging an object in or behind a highly scattering medium includes a laser for illuminating the highly scattering medium with a beam of light. The light emerging from the highly scattering medium consists of a ballistic component, a snake-like component and a diffuse component. A 4F Fou ...


3
Robert R Alfano, Yici Guo, Feng Liu, Ping Pei Ho: Non-linear optical tomography of turbid media. The Research Foundation of City College of New York, Kriegsman & Kriegsman, March 27, 2001: US06208886 (52 worldwide citation)

An apparatus utilizing non-linear optical signals for use in constructing a three-dimensional tomographic map of an in vivo biological tissue for medical disease detection purposes. In one embodiment, said apparatus comprises a stage for supporting the in vivo biological tissue; a laser for illumina ...


4
Robert R Alfano, Ping Pei Ho: Sub-surface imaging under paints and coatings using early light spectroscopy. Research Foundation of CUNY, F Chau & Associates, December 17, 2002: US06495833 (42 worldwide citation)

A system for non-destructively imaging surfaces through a coating, in accordance with the present invention, includes a near-infrared (NIR) light source for illuminating a coated surface. A detector is positioned in an operative relationship with the NIR light source to receive light backscattered f ...


5
Robert R Alfano, Vladimir V Petricevic, Ping Pei Ho: Method for amplifying laser signals and an amplifier for use in said method. The Research Foundation of City College of New York, Kriegsman & Kriegsman, February 10, 1998: US05717517 (27 worldwide citation)

A method for amplifying a signal pulse of laser light. Preferably, the method is used to amplify 1.3 .mu.m and/or 1.55 .mu.m signal pulses emitted from any 1.3 .mu.m or 1.55 .mu.m signal source, the method comprising providing an amplifying medium, the amplifying medium comprising an elongated core ...


6
Ping Pei Ho, Robert R Alfano: Multiple-stage optical Kerr gate system. Kriegsman & Kriegsman, July 13, 1993: US05227912 (24 worldwide citation)

A multiple-stage optical Kerr gate system for gating a probe pulse of light. In a first embodiment, the system includes at least two optical Kerr gates, each Kerr gate including a polarizer, an optical Kerr cell actuable by a pump pulse, and an analyzer. In a second embodiment, at least one of the K ...


7
Robert R Alfano, Ping Pei Ho, Leming Wang, Xiangchun Liang, Pierre A Galland: The Research Foundation of City College of New York, Kriegsman & Kriegsman, September 1, 1998: US05799656 (18 worldwide citation)

A method for detecting the presence of one or more calcifications within a portion of a turbid medium, such as a breast tissue. According to one aspect, the method involves illuminating at least a portion of the turbid medium with light, whereby light emerges from the turbid medium consisting of a b ...


8
Robert R Alfano, Ping Pei Ho: Three-dimensional optical imaging of semi-transparent and opaque objects using ultrashort light pulses, a streak camera and a coherent fiber bundle. Irving M Kriegsman, August 25, 1992: US05142372 (17 worldwide citation)

An apparatus for producing a 3-dimensional image of semi-transparent object or of a opaque object in a semi-transparent media includes a picosecond or a femtosecond laser, a streak camera, a coherent fiber bundle, a video camera and a computer. The apparatus provides a unique nondestructive and non- ...


9
Robert R Alfano, Ping Pei Ho, Patrice Baldeck: Terahertz repetition rate optical computing systems, and communication systems and logic elements using cross-phase modulation based optical processors. Kriegsman & Kriegsman, September 22, 1992: US05150248 (17 worldwide citation)

Optical communication systems, optical computing systems and optical logic elements which rely on the phenomena of cross-phase modulation to alter and control, either or simultaneously, the spectral, temporal or/and spatial properties of ultrashort light pulses for processing information with high s ...


10
Robert R Alfano, Ping Pei Ho: Apparatus and method for measuring the time evolution of carriers propogating within submicron and micron electronic devices. Irving M Kriegsman, July 23, 1991: US05034903 (10 worldwide citation)

An apparatus for determining and displaying the time evolution profile of electron carriers present within a submicron or micron device comprises a laser for generating a beam of ultrafast pulses of ultraviolet light. A first beam splitter splits each pulse into a transmitted beam and a reflected be ...