Center for Quantum Devices

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201.	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 Î¼m. ... [read more]
202.	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]
203.	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]
204.	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. â€œCompound semiconductors are like salt is to food,â€ said Professor Manijeh Razeghi, director of the CQD at Northwestern University. Each play an important role, contributing something the other cannot. ... [read more]
205.	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]
206.	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]
207.	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]
208.	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]
209.	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]
210.	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]

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