John P Walling

US Patent:

6876689, Apr 5, 2005

Filed:

Jun 7, 2001

Appl. No.:

09/876678

Inventors:

John Curtis Walling - Whitehouse Station NJ, US
Donald F. Heller - Bound Brook NJ, US

Assignee:

Light Age, Inc. - Somerset NJ

International Classification:

H01S003/083

US Classification:

372 94, 372 93, 372 18, 372 70, 372 72

Abstract:

A tunable solid-state laser system whose bandwidth and wavelength are controlled by the injection of light from a semiconductor diode laser. This laser system is capable of providing output light pulses over substantially all wavelength ranges in the electromagnetic spectrum. When suitably configured, it creates wavelength tunable (or fixed wavelength) pulses having spectral bandwidths that are Fourier transform limited and wavelength stabilized. The coupling means between the semiconductor diode laser and the ring laser cavity incorporates a means for optically isolating the diode laser source from optical feedback from the ring laser, ensuring diode laser source stability.

US Patent:

20060278897, Dec 14, 2006

Filed:

Jun 9, 2006

Appl. No.:

11/423325

Inventors:

Donald Heller - Bound Brook NJ, US
Brian Pryor - Ewing NJ, US
John Walling - Whitehouse Station NJ, US

International Classification:

H01L 29/768

US Classification:

257222000

Abstract:

A device for measuring optical power simultaneously for two or more spectral regions. Two or more photodetectors, such as photodiodes, measure the pulse energy and/or power emitted by a laser having output in two or more spectral regions. The laser radiation is transmitted through a diffuser or beamsplitter, then filtered and/or attenuated so that light from each respective spectral region is incident on the active region of a photodiode. The device also includes electronic circuitry with one or more operational amplifiers for each photodiode, integrators and analog-to-digital converters. In a preferred embodiment, the device also includes a microprocessor to provide noise reduction and calibration functions for each photodiode output, and to drive a display or readout.

US Patent:

56064535, Feb 25, 1997

Filed:

Apr 20, 1993

Appl. No.:

8/049955

Inventors:

John C. Walling - Whitehouse Station NJ
Jui T. Lin - Winter Springs FL
Mahendrakumar G. Jani - Poquoson VA
Richard C. Powell - Tucson AZ
Donald F. Heller - Bound Brook NJ

Assignee:

Light Age, Inc. - Somerset NJ

International Classification:

H01S 310
H03F 700

US Classification:

359330

Abstract:

Tunable optical parametric amplifiers and oscillators that are pumped by the light from a tunable laser source are disclosed. One possible embodiment uses a tunable solid-state laser pump and an OPA medium or nonlinear crystal, such as potassium titanyl phosphate KTP or barium borate BBO or lithium borate LBO. The second harmonic output from a tunable solid-state laser is also used to pump the OPA medium. A singly or doubly resonant cavity design is preferably used to reduce the oscillation threshold (i. e. , the required pump beam power) of the OPO.

US Patent:

42727332, Jun 9, 1981

Filed:

May 29, 1979

Appl. No.:

6/043513

Inventors:

John C. Walling - Morristown NJ
Robert C. Morris - Ledgewood NJ
Otis G. Peterson - Dover NJ
Hans P. Jenssen - Belmont MA

Assignee:

Allied Chemical Corporation - Morris Township, Morris County NJ

International Classification:

H01S 314

US Classification:

331 945F

Abstract:

A high power, broadly wavelength-tunable laser is provided which comprises as the laser medium particular single crystals of chromium-doped beryllium aluminate (BeAl. sub. 2 O. sub. 4 :Cr. sup. 3+) having the chrysoberyl structure, means for exciting the laser medium and tuning means. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. Elevated temperatures are preferred, however, since they result in higher laser gain. Emission is in a spectral range from red to infrared, and the laser is useful in the fields of defense, communications, isotope separation, photochemistry, etc. CROSS-REFERENCE TO PRIOR APPLICATION This application is a continuation-in-part of application Ser. No. 953,067, filed Oct. 20, 1978.

US Patent:

50714163, Dec 10, 1991

Filed:

May 2, 1990

Appl. No.:

7/517762

Inventors:

Donald F. Heller - Warren NJ
John C. Walling - White House Station NJ
Robert S. Anderson - Livermore CA

Assignee:

Metalaser Technologies, Inc. - Pleasanton CA

International Classification:

A61B 600

US Classification:

606 3

Abstract:

A laser beam from a tunable solid state laser such as an alexandrite laser passes through a Raman shifter to produce a Raman-emitted beam with wavelength shifted so as to be able to activate a preselected photosensitizer for medical treatment. A combination of a laser and a Raman shifter with or without additionally a harmonic generator such as a frequency doubler may be also selected such that radiation with two different wavelengths can be obtained for treatment and detection.

US Patent:

44908229, Dec 25, 1984

Filed:

Jun 17, 1982

Appl. No.:

6/389316

Inventors:

John C. Walling - White House Station NJ
Michael L. Shand - Morristown NJ

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

H01S 316

US Classification:

372 41

Abstract:

A broadly wavelength-tunable laser is provided which comprises as the laser medium a single crystal of YGG:Cr. sup. 3+. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. Emission is in a spectral range from red to infrared, and the laser is useful in the fields of defense, communications, isotope separation, photochemistry, etc.

US Patent:

54963060, Mar 5, 1996

Filed:

Nov 24, 1992

Appl. No.:

7/982022

Inventors:

Ralf Engelhardt - Uetze, DE
Ralf Brinkmann - Nordstemmen, DE
John C. Walling - Whitehouse Station NJ
Donald F. Heller - Boundbook NJ

Assignee:

Light Age, Inc. - Somerset NJ

International Classification:

A61B 1722

US Classification:

606 15

Abstract:

A method of laser lithotripsy is disclosed that utilizes pulse stretched Q-switched solid state lasers in conjunction with relatively small diameter optical fibers to achieve effective breakup of calculi located within the body, such as kidney and gall stones.

US Patent:

20160128776, May 12, 2016

Filed:

Nov 11, 2015

Appl. No.:

14/938777

Inventors:

John Curtis Walling - Whitehouse Station NJ, US

International Classification:

A61B 18/20
H01S 3/08
H01S 3/16

Abstract:

In some embodiments, the present invention provides for a laser pump chamber, including: at least one laser gain medium, at least one excitation source, and at least one diffuse reflector to direct and redirect an emission from the excitation source into the laser gain medium, wherein the at least one diffuse reflector is made from a diffuse reflector material comprising at least one of: 1) white quartz and 2) BaSO4.

Address:

2093 Lyde Pl, Scotch Plains, NJ 07076

Phone:

(908)4470579

VIN:

5GZEV13728J215180

Make:

Saturn

Model:

Outlook

Year:

2008