The Center for Quantum Devices in the News by    
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201.  
SWE Achievment Award Acceptance Adress: Dr. Razeghi
SWE Achievment Award Acceptance Adress: Dr. Razeghi
Society of Women Engineers - October 1, 1995
Good evening, ladies and gentlemen. It is a great pleasure and honor for me to have been selected at the 44th recipient of the Society of Women Engineers Achievement Award. ... [read more]
 
202.  
For Leadership and COntributions to Optoelectronic Devices and Education
For Leadership and COntributions to Optoelectronic Devices and Education
Society of Women Engineers - October 1, 1995
The Achievement Award is the highest award given annually by the Society of Women Engineers. It's presented annually to a woman who has made an outstanding contribution in a field of engineering, has academic training in either science or engineering, and meets the requirements for Senor Member in the Society. ... [read more]
 
203.  
Korean Center Inauguration
Korean Center Inauguration
McCormick Dimension - September 1, 1995
In ceremonies held July 28, Northwestern and Korea announced a five-year collaboration between KOSEF and the Center for Quantum Devices to develop new semiconductors and lasers. ... [read more]
 
204.  
InGaAsP Laser Diodes Outperform AlGaAs
InGaAsP Laser Diodes Outperform AlGaAs
Opto & Laser Europe - October 1, 1994
High-power semiconductor lasers based on InGaAsP alloys offer a superior alternative to conventional AlGaAs diodes. That's the view of Manijeh Razeghi at Northwestern Universtiy, who has fabricated devices with threshold current densities as low as 80 A/cm2, differential efficiencies as high as 1.2W/A, and projected lifetimes between 10^5 and 10^7 hours. ... [read more]
 
205.  
Aluminum-Free High-Power Diodes have Long Lifetimes
Aluminum-Free High-Power Diodes have Long Lifetimes
Laser Focus World - August 1, 1994
Scientist at Northwestern University have fabricated high-power laser diodes based on InGaAsP lattice-matched to GaAs substrates. The devices have power outputs of 750 mW in quasi-continuous more, and 650 mW in continuous mode (per facet). Razehi says that these devices have suffered no observable degradation after more than 3000 house of operation in the quasi-continuous regime. ... [read more]
 
206.  
Indium Makes More Durable Semiconductor Laser
Indium Makes More Durable Semiconductor Laser
Inside R&D - July 6, 1994
A strong case has been made for replacing aluminum-based semiconductor lasers with a new indium-based type that researchers at Northwestern University have been working on. In fact, the durability of the new semiconductor diodes is enough better than those in present high-power lasers that we could see new applications. ... [read more]
 
207.  
ARPA Seeks Cheaper, Better Laser Weapons
ARPA Seeks Cheaper, Better Laser Weapons
Laser Focus World - July 1, 1994
ARPA sponsored research at Northwestern University is focusing on technology for aluminum-free diodes emitting at 808 nm for use in pumping Nd:YAG lasers. This research seeks to demonstrate the use of a MOPCVD process to produce lasers diodes of InGaAsP as a replacement for diodes based on AlGaAs. ... [read more]
 
208.  
Quantum Force
Quantum Force
Northwestern Perspective - June 1, 1994
Students crowd into the office on the fourth floor of the Materials and Life Sciences Building. Seated at a table, Professor Manijeh Razeghi faces two renowned physicist from Poland. Three graduate students sitting beside her take notes as fast as they can. One student passes the visitors a three-dimensional drawing of something that looks like a multilayered pastry ... [read more]
 
209.  
High Powered Laser on a Chip
High Powered Laser on a Chip
Northwestern Perspective - March 1, 1994
Northwestern researchers have discovers a way to make high-powered lasers on a computer chip, which "should lead to a whole new generation of comercial high-powered lasers that will be reliable, long-lasting, and prescise," says Manijeh Razeghi, Walter P. Murphy Professor of Electrical Engineering and Computer Science. ... [read more]
 
210.  
Discovery viewed as breakthrough in miniature lasers
Discovery viewed as breakthrough in miniature lasers
The Huntsville Times - November 29, 1993
Northwestern University researchers say they have discovers a way to make high-powered lasers on a computer chip, a breakthrough that should lead to a new generation of miniature lasers. Previously, the only method for producing the lasers on a chip had involved the use of AlGaAs, But the use of aluminum content led to defects in the original construction and sudden failures in operation. ... [read more]
 

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