Center for Quantum Devices, Northwestern University

1 .	The Quantum Cascade Laser: A versatile and Powerful Tool Optics and Photonics News - July 30, 2008 Many important applications in the infrared are awaiting the right laser source. Advances in Quantum Cascade Lasers will enable powerful new technologies to become realities. ... [read more]
2 .	Nanostructured Sensors SPIE Professional - July 1, 2008 Infrared photon imaging between 3 and 14 μm has important applications in security, defense, astronomy, and a number of other areas. Researchers at the CQD have overcome several challenges in integrating Type II superlattice materials into IR imaging systems. Their innovative work using Nanotechnology to create these structures has resulted in fabrication of the first high-quality IR camera with a 10 μm cutoff wavelength. ... [read more]
3 .	Type-II FPA on the Cover IEEE Journal of Quantum Electronics, Vol. 44, No. 5&6 - June 1, 2008 The one of the CQD's most recent publications in the IEEE Journal of Quantum Electronics was chosen for the cover of the May-June issue. The cover photo consist of an image of Graduate Student Pierre-Yeves Delaunnay taken with an LWIR Type-2 FPA. ... [read more]
4 .	New Superlattice Structure Enables High Performance Infrared Imaging McCormick Press Release - May 27, 2008 Scientists at the Center for Quantum Devices (CQD) in the McCormick School of Engineering at Northwestern University have demonstrated for the first time a high-performance infrared imager, based on a Type II superlattice, which looks at wavelengths 20 times longer than visible light. ... [read more]
5 .	New Mid-Infrared Lasers Show Doubled Efficiency McCormick Press Release - May 19, 2008 Researchers at the Center for Quantum Devices at the McCormick School of Engineering at Northwestern University have recently doubled the efficiency of infrared lasers under the U.S. Defense Advanced Research Projects Agency’s Efficient Mid-wave Infrared Lasers (EMIL) program. ... [read more]
6 .	Type-II semiconductor superlattice photodetectors new alternative to HgCdTe Laser Focus World - May 15, 2008 In a invited talk at SPIE's Defense + Security Symposium March 17th, Professor Manijeh Razeghi announced that Type-II InAs/GaSb photodetectors may now be an important alternative to existing detectors in the LWIR and VLWIR ranges. ... [read more]
7 .	Tiny Avalanche Photodiode Detects Single UV Photons McCormick Press Release - January 28, 2008 In a significant breakthrough, researchers at Northwestern University’s Center for Quantum Devices (CQD) have demonstrated visible-blind avalanche photodiodes (APDs) capable of detecting single photons in the ultraviolet region (360-200 nm). ... [read more]
8 .	Turning Ideas into Reality SPIE - January 15, 2008 "Having a mentor to push and challenge you to do things you never imagined possible is worth more than any book." -- Manijeh Razeghi ... [read more]
9 .	Award Winning Publication: Quantum-Dot IR Photodetectors Get 'Hotter' Laser Focus World - December 31, 2007 Laser Focus World awarded the Center for Quantum Devices a prestigious Commendation for Excellence in Technical Communications in appreciation for the article Quantum-dot IR photodetectors get "hotter", published in December of 2007. ... [read more]
10 .	Quantum-Dot IR Photodetectors Get 'Hotter' Laser Focus World - December 15, 2007 Recent improvements to the operating temperature and quantum efficiency of quantum-dot infrared photo detectors (QDIPs) may lead to new high-performance imagers operating at or close to room temperature. They may be useful in medical and biological imaging, environmental and chemical monitoring, night vision, and infrared telescopes. ... [read more]
11 .	Women in Optics Calender 2008 SPIE - December 1, 2007 What I wish someone had told me: In all aspects of life, not only science, it is essential to surround yourself by those who have demonstrated excellence and those whom you can look to for inspiration Having a mentor to push and challenge you to do things you never imagined possible is worth more than any book. ... [read more]
12 .	QC laser sets new wall-plug-efficiency record Laser Focus World - September 1, 2007 Researchers at the CQD, who previously developed MWIR quantum-cascade lasers, are reporting another milestone in power output and wall-plug efficiency for their devices. The Northwestern team has demonstrated power levels of 675 mW at room temperature with a 9.3% wall-plug efficiency and power levels of more than 1 W at 150 K with a wall-plug efficiency greater than 18% at a wavelength of approximately 4.7 μm. ... [read more]
13 .	Laser Sets Records in Power and Energy Efficiency Northwestern University (Press Release) - July 18, 2007 The Center for Quantum Devices, has recently made great strides in laser design, material growth and laser fabrication that have greatly increased the output power and wall-plug efficiency of Quantum Cascade Lasers. The CQD has demonstrated lasers emitting at wavelengths of 4.5 microns, capable of producing over 700 milli-Watts of continuous output power at room temperature and more than one Watt of output power at lower temperatures. These lasers have a 10 percent wall-plug efficiency at room temperature and more than 18 percent wall-plug efficiency at lower temperatures, which is far superior to any competing laser technology at this wavelength. ... [read more]
14 .	Hot developments in infrared photodetector technology Nanotechnology in Paper & Packaging News - June 23, 2007 Researchers at Northwestern University, US, have made a significant advance in the development of infrared photodetectors that could lead to new imaging techniques for use in medicine, environmental monitoring, night vision and remote sensing from space. ... [read more]
15 .	The Brighter Side of Semiconductors Semiconductor International - June 1, 2007 The vast majority of activity in the semiconductor industry revolves around silicon. However, III-V semiconductors are not to be overlooked. “Compound semiconductors are like salt is to food,” said Professor Manijeh Razeghi, director of the CQD at Northwestern University. Each play an important role, contributing something the other cannot. ... [read more]
16 .	Making Strides in Quantum Dot Infrared Photodetectors McCormick - May 17, 2007 Researchers at Northwestern University have made significant strides in the development of quantum dot infrared photodetectors -- technology that may provide new imaging techniques with applications in medical and biological imaging, environmental and chemical monitoring, night vision and infrared imaging from space. ... [read more]
17 .	The Consummate Collaborator McCormick - May 1, 2007 It's immediately clear when visiting the Center for Quantum Devices (CQD) that Manijeh Razeghi genuinely cares about each member of her lab. As they all file into her office for an interview, her enthusiasm is undeniable as she introduces each person. Part professor, part doting parent, Razeghi beams as she described the work of her "geniuses." ... [read more]
18 .	Diode Laser Could Be Vital for Safeguarding Aircraft Northwestern University Press Release - August 31, 2006 The Center for Quantum Devices at Northwestern University has recently made great strides in laser design, material growth, and laser fabrication that have greatly increased the output power and efficiency of QCLs. ... [read more]
19 .	Continuous-Wave, Room Temperature Quantum Cascade Lasers. Optics & Photonics News - May 1, 2006 Quantum cascade lasers are now capable of continuous-wave, room-temperature, single-frequency operation with large powers. This progress may be translated into a number of applications including medical breath analysis and environmental monitoring. ... [read more]
20 .	Bioterror Defense Northwestern - April 1, 2006 Led by venter director Manijhe Razeghi, researchers have created and demonstrated a microscale ultraviolet light detector, a new and more precise method of detection biological agents such as anthrax and smallpox. ... [read more]
21 .	Electrical Engineering at Northwestern Northwestern University EECS Department - January 11, 2006 The Electrical Engineering graduate program at Northwestern focuses on the research and application of electronic and photonic technologies. The EE curriculum includes a wide range of sources in solid-state electronics, lasers, photonics, quantum mechanics and more. ... [read more]
22 .	Tiny Avalanche Photodiodes Target Bioterrorism Agents Northwestern University Press Release - October 11, 2005 In a significant finding, researchers at Northwestern University's Center for Quantum Devices have demonstrated solar-blind avalanche photodiodes (APDs) that hold promise for universal biological agent detection. ... [read more]
23 .	Blind Spot reveals Biological Agents Spectrscopy Now - October 1, 2005 Manijeh Razeghi of Northwestern University's Center for Quantum Devices and her colleagues have demonstrated a 280 nm APD based on the semiconductor aluminum gallium nitride (AlGaN) with a photocurrent gain of more than 700. ... [read more]
24 .	Light Sensor May Improve Battlefield Tools Science News - October 1, 2005 Now, engineers have created a microscale ultraviolet light detector that's sturdier and consumes far less power, compared with photomultiplier tubes. Field instruments using this detector and others tuned to other wavelengths could shrink the size of bio-agent detection equipment. ... [read more]
25 .	Room-Temperature 9.5 μm Quantum Cascade Laser Produces more than 100 mW Photonics Spectra - October 1, 2005 As part of the Laser Photo-Acoustic Spectroscopy (LPAS) program funded by DARPA, researchers at Northwestern University have demonstrated quantum cascade lasers that produce 106 mW of CW 9.5 μm radiation at 298 K. ... [read more]

Page 1 of 5: 1 2 3 4 5 >> Next (124 Items)