Jeffrey A Cooke

US Patent:

6839362, Jan 4, 2005

Filed:

May 22, 2001

Appl. No.:

09/863013

Inventors:

Milan R. Kokta - Washougal WA, US
Dennis L. Peressini - Vancouver WA, US
Jeffrey A. Cooke - Camas WA, US
Kevin L. Goodnight - Camas WA, US

Assignee:

Saint-Gobain Ceramics & Plastics, Inc. - Worcester MA

International Classification:

H01S 311

US Classification:

372 10, 372 11

Abstract:

A saturable absorber Q-switch includes a monocrystalline lattice having the formula MgCoAlOwhere x is greater than 0 and less than 1, y is greater than 2 and less than about 8, and z is between about 4 and 13. The lattice has tetrahedral and octahedral positions, and most of the magnesium and cobalt occupy tetrahedral positions. In one embodiment, the molar ratio of aluminum to the combined amount of magnesium and cobalt in the monocrystalline lattice can be controlled during growth of the monocrystalline lattice to thereby form a saturable absorber Q-switch that exhibits a Tspectrum for the cobalt ion of at least about 1544 μm. In another embodiment, a laser system, such as an Er:Yr:glass laser system, includes a saturable absorber Q-switch that includes a monocrystalline lattice wherein the molar ratio of aluminum to the combined amounts of magnesium and cobalt exceeds 2:1, and preferably is about 6:1, and wherein essentially all of the magnesium and cobalt components of the monocrystalline occupy tetrahedral positions of the lattice.

US Patent:

7045223, May 16, 2006

Filed:

Sep 23, 2003

Appl. No.:

10/669141

Inventors:

Milan Kokta - Washougal WA, US
Jennifer Stone-Sundberg - Portland OR, US
Jeffrey Cooke - Camas WA, US
Ronald Ackerman - Camas WA, US
Hung Ong - Vancouver WA, US
Emily Corrigan - Portland OR, US

Assignee:

Saint-Gobain Ceramics & Plastics, Inc. - Worcester MA

International Classification:

C30B 29/16
C30B 29/22

US Classification:

428702, 428 641, 428689, 428697, 42359416, 423600, 117944, 117950

Abstract:

Single crystal spinel boules, wafers, substrates and active devices including same are disclosed. In one embodiment, such articles have reduced mechanical stress and/or strain represented by improved yield rates.

US Patent:

20040089220, May 13, 2004

Filed:

Sep 23, 2003

Appl. No.:

10/669145

Inventors:

Milan Kokta - Washougal WA, US
Dennis Peressini - Vancouver WA, US
Jeffrey Cooke - Camas WA, US
Kevin Goodnight - Camas WA, US

Assignee:

SAINT-GOBAIN CERAMICS & PLASTICS, INC.

International Classification:

C30B001/00
H01S003/11
C30B015/00
C30B021/06
C30B027/02
C30B028/10
C30B030/04
C01B033/26

US Classification:

117/002000, 117/013000, 423/328200

Abstract:

A single crystal ceramic material for optical and optoelectronic applications is d, including a single crystal spinel having a general formula aADbED, wherein A is selected from the group consisting of Mg, Ca, Zn, Mn, Ba, Sr, Cd, Fe, and combinations thereof, E is selected from the group consisting Al, In, Cr, Sc, Lu, Fe, and combinations thereof, and D is selected from the group consisting O, S, Se, and combinations thereof. A ratio b:a 1:1 such that the spinel is rich in ED, and the single crystal spinel is formed by a melt process

US Patent:

20050061230, Mar 24, 2005

Filed:

Sep 23, 2003

Appl. No.:

10/669135

Inventors:

Milan Kokta - Washougal WA, US
Jennifer Stone-Sundberg - Portland OR, US
Jeffrey Cooke - Camas WA, US
Ronald Ackerman - Camas WA, US
Hung Ong - Vancouver WA, US
Emily Corrigan - Portland OR, US

International Classification:

C30B001/00

US Classification:

117011000

Abstract:

Single crystal spinel boules, wafers, substrates and active devices including same are disclosed. In one embodiment, such articles have reduced mechanical stress and/or strain represented by improved yield rates.