The Center for Quantum Devices in the News by    
Page 19 of 25:  Prev << 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19  20 21 22 23 24 25  >> Next  (242 Items)

181.  
High Power InAsSb/InAsSbP laser Diodes  Emitting in the 3 - 5 &mum Range
High Power InAsSb/InAsSbP laser Diodes Emitting in the 3 - 5 &mum Range
Research Hilights or the Physics Division - January 1, 1998
Mid-infrared laser diodes (λ = 3 to 5 μm) are the attractive source for a wide range of applications ranging from chemical spectroscopy to free-space and optical fiber communication. ... [read more]
 
182.  
Record Calimed by Al-free Laser
Record Calimed by Al-free Laser
Electron Materials Technology News - December 1, 1997
Researchers at Northwestern University's Center for Quantum Devices are claiming the longest lifetime ever achieved for any high-power (more than 1 W) laser diode operated at high temperature (-60°C) with uncoated facets. ... [read more]
 
183.  
Sharper Imaes Thanks to Bigger Substrates
Sharper Imaes Thanks to Bigger Substrates
Inside R & D - November 12, 1997
A group at Northwestern University's Center for Quantum Devices has pushed the envelope by marrying higher quality, more uniform, cheaper and larger GaAs substrates with InSb films. ... [read more]
 
184.  
Northwestern Team Produces Quantum Cascade Laser
Northwestern Team Produces Quantum Cascade Laser
Optics and Photonics News - November 1, 1997
Using a single-step Growth process, Northwestern University researchers have produced room-temperature 8.5 μmm quantum cascade lasers (QCL). The lasers produce 1 μsec pulses at 200 Hz with a peak output power of more than 700 mW at 79K, and 25 mW at 300 K. ... [read more]
 
185.  
Researchers Demonstrate High-Power, Aluminum-free Mid-IR Laser
Researchers Demonstrate High-Power, Aluminum-free Mid-IR Laser
Photonics Spectra - October 1, 1997
Scientist at the Center for Quantum Devices have demonstrated and Al-free laser diode that emits up to 3 W at 3.2 μm. In comparison, similar Al-Free diode lasers have a maximum output of 100 mW, according to the center's director Dr. Manijeh Razeghi. ... [read more]
 
186.  
Northwestern Pushes Nitirde Research
Northwestern Pushes Nitirde Research
Electron Materials Technology News - September 1, 1997
Northwestern University's Center for Quantum Devices investigated ternary AlInN grown by MOCVD. They found the material to have a band-gap energy of 5.26 eV, (higher than previously reported) for a composition of Al0.92In0.08N ... [read more]
 
187.  
Single-Step QC Laser Emits at 8.5 μm
Single-Step QC Laser Emits at 8.5 μm
Photonics Spectra - August 1, 1997
In the latest development in quantum cascade laser (QCL) research a group of Northwestern University scientist reported an 8.5-μm emission from a QCL grown in a single step by gas-source MBE. ... [read more]
 
188.  
High-Power Mid-Infrared Diode-Laser Bar Generates Peak Power of 3 W at 3.2 μm
High-Power Mid-Infrared Diode-Laser Bar Generates Peak Power of 3 W at 3.2 μm
Laser Focus World - August 1, 1997
Scientist at Northwestern University have developed an antimonide-based laser bar that yields 3 W of peak power at 3.2 μm operating at 90 K. The device was tunable by injection current over a range of about 70 nm. ... [read more]
 
189.  
Semiconuctor Laser International
Semiconuctor Laser International
NASA Tech Briefs - July 10, 1997
Dr. Geoffrey T. Burnham, SLI's president and CEO announced that demand for laser build using Northwestern University's patented Al-Free technology was so great that work would begin on a second phase of its manufacturing facility that would double its size. ... [read more]
 
190.  
Aluminum-Free Diode Lasers
Aluminum-Free Diode Lasers
Lasers and Optronics - May 1, 1997
The Center for Quantum Devices at Northwestern University, has achieved operation at 60°C with 1 W of output power for a 100 μm-emitting aperture, over a device lifetime of 30,000 hours without any degradation in output power or change in wavelength, threshold current, or efficiency. ... [read more]
 

Page 19 of 25:  Prev << 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19  20 21 22 23 24 25  >> Next  (242 Items)