81.
| 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]
|
82.
 | 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]
|
83.
 | 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]
|
84.
.jpg) | 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]
|
85.
| 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]
|
86.
 | 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]
|
87.
.jpg) | 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]
|
88.
 | 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]
|
89.
 | 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]
|
90.
| Pabricate Group III-Nitride Alloys on Saphire
Microelectronics Technology Alert - April 21, 1997
The Norwestern group has already refined the deposition of epitaxial layers of III-Nitrides on sapphire substrates and extended the process. Using MOCVD, the alloys were fabricated on the sapphire substrates by varying the concentration of Al compounds to produce a variety of configurations of AlGaN ... [read more]
|
