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31.  
Manijeh Razeghi Selected to Editorial Board of Light: Science & Applications
Manijeh Razeghi Selected to Editorial Board of Light: Science & Applications
Nature Publishing Group - July 21, 2020
Dr. Manijeh Razeghi will serve on the editorial board for two year. Dr. Razeghi has been appointed as an editor of Light: Science & Applications (LSA), published by the Nature Publishing Group, from July 2020 to June 2022... [read more] ... [read more]
 
32.  
<i>High power continuous wave operation of single mode quantum cascade lasers up to 5 W spanning λ∼3.8-8.3 μm</i> chosen for inclusion in Spotlight on Optics.
High power continuous wave operation of single mode quantum cascade lasers up to 5 W spanning λ∼3.8-8.3 μm chosen for inclusion in Spotlight on Optics.
OSA Spotlight on Optics. - July 8, 2020
Dr. Manijeh Razeghi, The Optical Society (OSA) is pleased to inform you that your paper, High power continuous wave operation of single mode quantum cascade lasers up to 5 W spanning λ∼3.8-8.3 μm, has been chosen for inclusion in Spotlight on Optics. ... [read more]
 
33.  
Certificate of Appointment from Light Science & Applications
Certificate of Appointment from Light Science & Applications
Light: Science & Applications - June 30, 2020
Dr. Manijeh Razeghi received a Certificate of Appointment from Light: Science & Applications for her service as an editor for (ISSN (online): 2047-7538 a Springer Nature Journal, from July 2020 to June 2022. ... [read more] ... [read more]
 
34.  
"Room temperature quantum cascade lasers with 22% wall plug efficiency in continuous-wave operation", has been highlighted as an Editor's Pick.
- June 8, 2020
We report the demonstration of quantum cascade lasers (QCLs) with improved efficiency emitting at a wavelength of 4.9 µm in pulsed and continuous-wave (CW) operation. Based on an established design and guided by simulation, the number of QCL-emitting stages is increased in order to realize a 29.3% wall plug efficiency (WPE) in pulsed operation at room temperature. With proper fabrication and packaging, a 5-mm-long, 8-µm-wide QCL with a buried ridge waveguide is capable of 22% CW WPE and 5.6 W CW output power at room temperature. This corresponds to an extremely high optical density at the output facet of ∼35 MW/cm&up2;, without any damage. ... [read more]
 
35.  
New Textbook Demystifies Carbon Materials
New Textbook Demystifies Carbon Materials
McCormick Press Release - January 17, 2020
Carbon is a primary building block of life and forms millions of organic compounds with hydrogen, making it essential to the universe. It is also found in nearly every part of the human body. Northwestern Engineering’s Manijeh Razeghi wrote a new textbook offering a fundamental understanding of carbon, its science, applications, and recent discoveries made in the field of carbon materials. ... [read more]
 
36.  
Engineering the Quantum Era: Breaking Spectral barries for photonics
Engineering the Quantum Era: Breaking Spectral barries for photonics
Optics 2019 - October 7, 2019
The global quantum cascade laser (QCL) market is expected to grow from USD 302.9 million in 2016 to USD 374.8 million by 2022 at a CAGR of 3.9% between 2017 and 2022.The report aims at estimating the market size and future growth potential of the QCL market supported packaging sort, operation mode, fabrication technology, and geographic analysis.The base year thought of for the study is 2016, and therefore the market size forecast is provided for the amount between 2017 and 2022. ... [read more]
 
37.  
 
TERAHERTZ OPTICS Room-temperature comb
- June 21, 2019
A frequency comb in the terahertz region and that operates at room temperature could prove useful for applications in spectroscopy. The device, designed and built by scientists from Northwestern University in the US, relies on difference-frequency generation from a mid-infrared (mid-IR) quantum cascade laser (QCL). ... [read more]
 
38.  
VISIT OF PROFESSOR MANIJEH RAZEGHI TO UPEC
VISIT OF PROFESSOR MANIJEH RAZEGHI TO UPEC
- June 19, 2019
Manijeh Razeghi has been a pioneer in the development and implementation of the main modern epitaxy techniques. After leading, from 1986 to 1991, the Exploratory Materials Laboratory at Thomson CSF; she is the Director of the Center for Quantum Devices at Northwestern University in Chicago. ... [read more]
 
39.  
ECE Student Profile: Robby Gray
ECE Student Profile: Robby Gray
- April 26, 2019
When Robby Gray (’19) isn’t working with lasers, he might be found on campus arranging music for the X-Factors acapella group, supporting new students as a leader for Wildcat Welcome, or working with Global Engineering Brigades to build health infrastructure for communities in Central America and West Africa. ... [read more]
 
40.  
 
p-Type thin film field effect transistors based on lithium-doped nickel oxide channels grown by pulsed laser deposition
Proceedings Volume 10919, Oxide-based Materials and Devices X; 109191H (2019 - March 12, 2019
Abstract Staggered back-gated Field Effect Transistor (FET) structures were made by growing Li-doped NiO on Si3N4/SiO2/Si (111) using room temperature pulsed laser deposition. Optical studies showed over 80% transmission for the NiO:Li channel at wavelengths > 500nm. The MISFET revealed rectifying transfer characteristics, with a VON close to zero, a channel mobility of ~ 1 cm2/Vs, a gate leakage current (at +5V) of 0.8 mA and an ION/IOFF ratio (at a Vgs of -15V) of ~ 103. The transistors showed enhancement-mode output characteristics indicative of a p-type channel with sharp pinchoff, hard saturation, a comparatively high (milliampere range) Id and a relatively low on-resistance of ~11 kΩ. Hence the adoption of Li doping in NiO channels would appear to be a promising approach to obtain p-type TFTs with superior transparency, speed and energy efficiency. ... [read more]
 

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