301.
| Northwestern InSb Research Revisited
Electron Materials Technology News - April 1, 1996
Unfortunately the previous story about Northwestern university's QWIPs was incorrect. While the Center is working on QWIPs, the work discussed involved simple InSb p-n junction devices. ... [read more]
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302.
| Some Like it Hot
Chemistry and Industry - February 19, 1996
Big brother may soon have a new way of watching you, thanks to researchers at Northwestern University. They've used advanced film deposition techniques to make heat-sensitive detectors so sensitive that they can provide detailed images of the human body from several miles away. ... [read more]
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303.
| Cameras That Go Infrared in the Night
New Scientist - February 17, 1996
Infrared detectors made from materials already used in lasers promise to provide the best infrared cameras and night-vision devices yet. These quantum well infrared photodetectors, or QWIPS are made from alternating layers of semiconductor materials, arranged atom by atom into layers just 10 molecules thick, says Manijeh Razeghi. ... [read more]
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304.
| Growth of Ge-Dopes AlGaN
Compound Semiconductor - January 31, 1996
Photoluminescence data for Al[x]Ga[1-x]N samples with x < 0.2 displayed sharp band edge emission and a bread deep-level emission near 2.4 eV. Ge doping eliminated the deep level emission features observed in un-dopes AlGaN samples suggesting that this deep level emission may be related to Ga vacancies that could be filled by Ge donor impurities ... [read more]
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305.
| Razeghi, Faber Reconized for Achievement
Observer - November 6, 1995
Two faculty members at the Robert R. McCormick School of Engineering and Applied Science -- Manijeh Razeghi and Katherine Faber -- have been cited by the Society of Women Engineers for outstanding achievements. ... [read more]
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306.
| Aluminum-Free Diode Lasers Last Longer
Laser Focus World - November 1, 1995
Ongoing test suggest both rugged operation and long life for InGaAsP based aluminum-free diode lasers fabricated by researchers at Northwestern University. Elimination of aluminum removes an easily oxidized specie that spreads performance-degrading defects through the structure by forming light-absorbing dark lines. ... [read more]
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307.
| Engineering Center and Korea Collaborate
Observer - October 2, 1995
The Center for Quantum Devices has been selected be the Korea Science and Engineering Foundation for a long-term collaboration to develop new lasers and semiconductor devices. The $1300,000 a year collaboration will enable research scientist and postdocs from the Joenbuk REsearch Center at Joenbuk National University to carry out joint research projects the Center for Quantum Devices of a five year period. ... [read more]
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308.
| 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]
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309.
| 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]
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310.
| 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]
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311.
| 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]
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312.
| 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]
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313.
| 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]
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314.
| 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]
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315.
| 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]
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316.
| 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]
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317.
| 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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318.
| NU Researchers on power trip over laser findings
The Daily Northwestern - November 19, 1993
Miniature lasers could be shooting throguh laboratories everywhere due to Northwestern researchers' discoveries of new methods of producing the high powered beams. Manijeh Razeghi, Professor of electrical engineering and computer science, announced the finding Wednesday at the anual meeting of the Lasers and Electro-Optic Society in San Jose, Ca. ... [read more]
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319.
| High Powered Laser on a Chip
Inside R&D - October 8, 1993
Researchers at Northwestern University have discovered a way to make high-powered aluminum free lasers on a computer chip. Test on bench versions of he new lasers show them to be more reliable and stable than the best results ever reported for the aluminum-based chips. The lasers should also be simple to produce, easy to operate, and provide a high power density. ... [read more]
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320.
| New Optoelectronics Chip Built at Northwestern
McCormick Dimension - September 1, 1993
Researchers at Northwestern University have succeeded in building what are believed to be the most precise and long-lasting lasers ever constructed on a silicon base. The achievement is an important step toward the marriage of electronics and photonics on a single chip. ... [read more]
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321.
| Next Generation Laser Diodes: Aluminum Free
Optics & Photonics News - September 1, 1993
If research at Northwestern University is successful, aluminum-free laser diodes may be on the shelves in the next several years. Manijeh Razeghi, director of Northwestern's Center for Quantum Devices, leads a team investigating InGaAsP/InGaP/GaAs doubble heterostructure laser diodes grown using metalorganic chemical vapor deposition (MOCVD) ... [read more]
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322.
| Northwestern Opens Center for Quantum Devices
McCormick Dimension - September 1, 1993
McCormick's new Center for Quantum Devices opened June 7 with Nobel Laureates Leo Esaki, president of Japsn's University of Tsukuba and Klaus von Klitzing of Germany's Max Planck Institute joining center director Manijeh Razeghi in cutting the ceremonial red ribbon. ... [read more]
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323.
| Quantum Leap for Research
Northwestern Perspective - September 1, 1993
Northwestern's new center for Quantum Devices opened June 7th. Established by Manijeh Razeghi, the center is believed to be the most advanced of its kind in the U.S. It has already recieved federal grants totaling $2.2 million. ... [read more]
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324.
| Researcher sheds light on opto-electronics
Chicago Tribune - November 9, 1992
In Evanston, Northwestern University scientist have for the first time built tiny lasers made from exotic materials onto a base of silicon, a difficult technical feat that could advance the marriage of optics and electronics. Razeghi said that the technology she uses to build the tiny laser, a type of chemical vapor deposition is widely used in industry. By teaching students how to use this tool to make lasers of silicon, she said, she is helping industry by providing a skilled work force. ... [read more]
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325.
| Better Laser on a Chip
Inside R&D - October 7, 1992
After years of trying in a number of labs, a way has been found to put indium phosphide on silicon. Manijeh Razeghi, a leading opto-electronics researcher, accomplished this and went on to build the most precise and long-lasting laser yet constructed on a silicon base, a key step towards combining electronics and photonics on a single computer chip. ... [read more]
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Channel
Address: Center for Quantum Devices; 2220 Campus Drive RM 4051; Evanston, IL 60208-0893
Phone: (847) 491-7251
Email: razeghi@northwestern.edu