Larry E Marshall

US Patent:

6377599, Apr 23, 2002

Filed:

Jan 12, 1999

Appl. No.:

09/229461

Inventors:

Larry R. Marshall - Mountain View CA

Assignee:

Iridex Corporation - Mountain View CA

International Classification:

H01S 30941

US Classification:

372 75, 359833

Abstract:

An optical device has a mount including a mount surface with a longitudinal axis. A diode source has a first diode emitter producing a first beam, a second diode emitter producing a second beam and a third diode emitter producing a third beam. The diode source is mounted above the mount surface at an angle relative to the longitudinal axis of the mount. A prism array has a first prism face, a second prism face and a third prism face. The prism array has an angled surface cut at the angle relative to a longitudinal axis of the prism array. The first, second and third beams are incident on the first, second and third prism faces respectively. Optical path lengths between the first, second and third diode emitters relative to the first, second and third prism faces are equal.

US Patent:

6717718, Apr 6, 2004

Filed:

Mar 28, 2002

Appl. No.:

10/113918

Inventors:

Wayne Kelsoe - San Jose CA 95120
Larry Marshall - Mountain View CA 94041

International Classification:

H01S 300

US Classification:

359333, 359326

Abstract:

Invention employs a unique combination of semiconductor optical amplifier and nonlinear optical filter to achieve wavelength conversion and regeneration.

US Patent:

6734453, May 11, 2004

Filed:

Aug 7, 2001

Appl. No.:

09/924392

Inventors:

Petar B. Atanackovic - Palo Alto CA
Larry R. Marshall - Mountain View CA

Assignee:

Translucent Photonics, Inc. - Palo Alto CA

International Classification:

H01L 2915

US Classification:

257 19, 257 13, 257 21, 257 97

Abstract:

A photonic device includes a silicon semiconductor based superlattice. The superlattice has a plurality of layers that form a plurality of repeating units. At least one of the layers in the repeating unit is an optically active layer with at least one species of rare earth ion.

US Patent:

6858864, Feb 22, 2005

Filed:

Apr 16, 2004

Appl. No.:

10/825974

Inventors:

Petar B. Atanackovic - Palo Alto CA, US
Larry R. Marshall - Mountain View CA, US

Assignee:

Translucent Photonics, Inc. - Palo Alto CA

International Classification:

H01L031/0288

US Classification:

257 17, 257 13, 257 18, 257 21, 257 22

Abstract:

A photonic device includes a silicon semiconductor based superlattice. The superlattice has a plurality of layers that form a plurality of repeating units. At least one of the layers in the repeating unit is an optically active layer with at least one species of rare earth ion.

US Patent:

6876487, Apr 5, 2005

Filed:

Mar 14, 2002

Appl. No.:

10/098166

Inventors:

Larry R. Marshall - Mountain View CA, US

Assignee:

Lightbit Corporation, Inc. - Mountain View CA

International Classification:

G02F001/365
G02B006/34

US Classification:

359332, 359326, 385 37, 385122

Abstract:

All-optical wavelength converters based upon difference frequency generation (DFG) in optical chips with periodically poled materials are presented. Tunable continuous wave (CW) laser sources and various arrangements are made with the optical input signals in different ITU channels. In some arrangements the laser source(s) acts as the pump for the conversion of the input signals to different wavelengths. In other arrangement, the amplified input signals acts as a pump with the laser source in the role of the input signal. The net effect is that input signals are converted to different wavelengths. One-to-any, any-to-one, and any-to-any wavelength converters are described. Simultanenous conversation can also be preformed so that bands of signals may also be converted.

US Patent:

7023011, Apr 4, 2006

Filed:

Sep 17, 2003

Appl. No.:

10/666897

Inventors:

Petar B. Atanackovic - Palo Alto CA, US
Larry R. Marshall - Mountain View CA, US

Assignee:

Translucent, Inc. - Palo Alto CA

International Classification:

H01L 31/0304

US Classification:

257 22, 257 21, 257 17, 257 18

Abstract:

A photonic device includes a silicon semiconductor based superlattice. The superlattice has a plurality of layers that form a plurality of repeating units. At least one of the layers in the repeating unit is an optically active layer with at least one species of rare earth ion.

US Patent:

7211821, May 1, 2007

Filed:

Apr 16, 2004

Appl. No.:

10/825912

Inventors:

Petar B. Atanackovic - Palo Alto CA, US
Larry R. Marshall - Mountain View CA, US

Assignee:

Translucent Photonics, Inc. - Palo Alto CA

International Classification:

H01L 29/15
H01L 31/036

US Classification:

257 21, 257 22

Abstract:

A photonic device includes a silicon semiconductor based superlattice. The superlattice has a plurality of layers that form a plurality of repeating units. At least one of the layers in the repeating unit is an optically active layer with at least one species of rare earth ion.

US Patent:

59827890, Nov 9, 1999

Filed:

May 30, 1997

Appl. No.:

8/865508

Inventors:

Larry R. Marshall - Sunnyvale CA
Wayne E. Kelsoe - San Jose CA
David M. Buzawa - San Jose CA

Assignee:

Light Solutions Corporation - Mountain View CA

International Classification:

H01S 310

US Classification:

372 22

Abstract:

A diode pumped doubling system employs a pump diode, a crystal and doubler in a laser cavity with the diode and is operated in a pulsed or low duty cycle pumping regimen, while the cavity length is sufficiently short to stabilize the transient responses to pulsed diode operation and produce stable and known or controlled energy output under the non-CW pumping regimen. The construction allows stable output to be maintained with much looser temperature control, and to be achieved during the initial turn-on interval of the laser diode. In a preferred embodiment, the device employs a doubler which is clamped across its non-critical axis, and is operated with a control system which creates isotherms in the active mode volume. The controller operates one or more separate heat sources and/or sinks to preheat the diode source or doubling crystal to maintain an oriented thermal gradient, and the rate or direction at which the isotherm migrates across the mode volume is controlled in accordance with the forthcoming pulse sequence to maintain effectively stable conditions during laser operation. The thermal control system may include sink, heater and control elements for pre-heating the laser diode before actuation, and during quiet intervals.