Mahmoud Fallahi

US Patent:

6608950, Aug 19, 2003

Filed:

Feb 14, 2001

Appl. No.:

09/783692

Inventors:

Elizabeth T. Kunkee - Manhattan Beach CA
David V. Forbes - Oregon WI
James E. Leight - San Ramon CA
Mahmoud Fallahi - Tucson AZ

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

G02B 642

US Classification:

385 39, 385130

Abstract:

An integrated optoelectronic device ( ) includes a substrate ( ), at least one optoelectronic component ( ) provided on the substrate ( ), and a waveguide ( ) provided on the substrate ( ) and optically connected to the at least one optoelectronic component ( ). The waveguide ( ) is made of a sol-gel glass. A method for making the integrated optoelectronic device ( ) includes the steps of providing a substrate ( ), providing at least one optoelectronic component ( ) on the substrate ( ), and providing at least one sol-gel glass waveguide ( ) on the substrate ( ) and optically connected to the at least one optoelectronic component ( ).

US Patent:

7079730, Jul 18, 2006

Filed:

Apr 30, 2002

Appl. No.:

10/134431

Inventors:

Mahmoud Fallahi - Tucson AZ, US
Amir Fardad - Tucson AZ, US

Assignee:

The Arizona Board of Regents - Tucson AZ

International Classification:

G02B 6/26
G02B 6/34

US Classification:

385 39, 385 15, 385 37, 385141, 372102

Abstract:

A hybrid optoelectronic device and method of producing the hybrid device in which the hybrid device includes a substrate with an input region configured to accept input light, a sol-gel glass multimode interference region coupled to and contiguous with the input region and configured to accept and replicate the input light as multiple self-images, and a sol-gel glass output region contiguous with the multimode region and configured to accept and to output the multiple self-images. Alternatively, the hybrid optoelectronic device includes a substrate with a photoelectronic device, a surface resonator including a light-emitting part of the photelectronic device and configured to resonate light from the photoelectronic device to produce a laser light, and a grating outcoupler contiguous with the surface resonator and configured to diffract the laser light outward from the grating outcoupler and to electrically vary an index of refraction of the outcoupler and change a direction of the diffracted laser light.

US Patent:

20080013159, Jan 17, 2008

Filed:

Jun 26, 2007

Appl. No.:

11/768661

Inventors:

Mahmoud Fallahi - Tucson AZ, US
Nasser Peyghambarian - Tucson AZ, US
Robert Norwood - Tucson AZ, US

Assignee:

THE ARIZONA BD OF REG ON BEHALF OF THE UNIV OF AZ - Tucson AZ

International Classification:

G02F 1/00

US Classification:

359321000

Abstract:

An optical device including: a first transparent substrate; a first electrode disposed on the first transparent substrate; a first mirror disposed on the first electrode; a high electro-optic coefficient polymer or sol-gel material disposed on the first mirror; a second mirror disposed on the high electro-optic coefficient polymer or sol-gel material and at least partially sandwiching the sol-gel material between the first and second mirrors; a second electrode disposed on the second mirror; and a second transparent substrate disposed on the second electrode.

US Patent:

20090274177, Nov 5, 2009

Filed:

Jan 4, 2007

Appl. No.:

12/159794

Inventors:

Li Fan - Tucson AZ, US
Mahmoud Fallahi - Tucson AZ, US
Jerome V. Moloney - Tucson AZ, US

Assignee:

The Arizona BD of Reg on Behalf of The Univ of AZ - Tucson AZ

International Classification:

H01S 3/10
H01S 3/08
H01S 5/00

US Classification:

372 20, 372 99, 372 45011, 372 22

Abstract:

A laser apparatus includes a first surface-emitting laser device having an active region including at least one group of two or more quantum wells configured to generate photons and having an internal mirror configured to reflect the generated photons, and first and second opposing end cavity mirrors optically coupled to each other via the internal mirror of the first surface-emitting laser device and arranged to reflect the photons generated by the first surface-emitting laser device back to the first surface-emitting laser device to form a standing wave having a single antinode coincident with said at least one group of two or more quantum wells.

US Patent:

20130294467, Nov 7, 2013

Filed:

Dec 21, 2009

Appl. No.:

12/643618

Inventors:

Jerome V. Moloney - Tucson AZ, US
Mahmoud Fallahi - Tucson AZ, US
Stephan W. Koch - Fronhausen, DE
Martin Koch - Kirchhaln, DE
Maik Scheller - Braunschweig, DE
Kai Baaske - Cremlingen, DE

International Classification:

H01S 3/10

US Classification:

372 20

Abstract:

A multi-wavelength VECSEL includes an active region comprising a plurality of semiconductor quantum wells having an intrinsically broadened gain with a wavelength selective filter disposed within the cavity to provide a laser output that oscillates at two or more separated wavelengths simultaneously. A non-linear crystal may be provided in the cavity to emit radiation at a frequency in the THz range that is the difference of the frequencies associated with two of the separated wavelengths.

US Patent:

6436613, Aug 20, 2002

Filed:

Aug 23, 2000

Appl. No.:

09/643875

Inventors:

Mahmoud Fallahi - Tucson AZ
Amir Fardad - Tucson AZ

Assignee:

The Arizona Board of Regents - Tucson AZ

International Classification:

G03F 700

US Classification:

430321, 430313, 430317, 430319, 430330, 438 31, 438 32, 438 35, 216 2, 216 24

Abstract:

A hybrid optoelectronic device and method of producing the hybrid device in which the hybrid device includes a substrate with an input region configured to accept input light, a sol-gel glass multimode interference region coupled to and contiguous with the input region and configured to accept and replicate the input light as multiple self-images, and a sol-gel glass output region contiguous with the multimode region and configured to accept and to output the multiple self-images. Alternatively, the hybrid optoelectronic device includes a substrate with a photoelectronic device, a surface resonator including a light-emitting part of the photelectronic device and configured to resonate light from the photoelectronic device to produce a laser light, and a grating outcoupler contiguous with the surface resonator and configured to diffract the laser light outward from the grating outcoupler and to electrically vary an index of refraction of the outcoupler and change a direction of the diffracted laser light.