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Princeton Docket # 15-3101-1Researchers in the Department of Electrical Engineering at Princeton University have developed a novel Quantum Cascade (QC) device to emit mid-infrared (mid-IR) superluminescent light with high power output. The high power superluminescent light has applications in mid-IR broadband absorption spectroscopy and mid-IR optical...
Published: 3/30/2022
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Inventor(s): Nyan Aung, Mei Chai Zheng, Claire Gmachl
Keywords(s): laser
Category(s): Mechanical/Electrical Engineering
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Noninvasive Mid-infrared in vivo Glucose Sensor
Princeton Docket # 14-2945
Researchers in the Department of Electrical Engineering at Princeton University have developed a novel, noninvasive method to measure blood glucose levels. Development of this noninvasive in vivo glucose sensor may improve the quality of life for the more than 343 million...
Published: 11/9/2022
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Inventor(s): Sabbir Liakat, Claire Gmachl, Anna Michel
Keywords(s): biomarker/diagnostic, diabetes, laser, life science research tools, medical device
Category(s): Biotechnology/Pharmaceuticals, Medical Devices/Diagnostics, Mechanical/Electrical Engineering
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Princeton Docket # 10-2616
Broadly
tunable QC lasers are ideal candidates for multi-analyte mid-infrared
spectroscopy application. However,
the maximum tuning range is usually limited by the inherently narrow gain
spectrum of intersubband transitions.
Princeton researchers have developed a ¿continuum-to-bound¿ QC laser,
with two lower injector...
Published: 3/30/2022
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Inventor(s): Yu Yao, William Charles, Jianxin Chen, Claire Gmachl
Keywords(s):
Category(s): Mechanical/Electrical Engineering
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Princeton Docket # 09-2561
The transport of electrons from
the injector ground level to the upper laser level in the active region of a QC
laser significantly influences the laser performance. The stronger the coupling between these
two levels, the faster electrons can be transferred into the active region, the
better is the performance...
Published: 3/14/2024
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Inventor(s): Qiang Liu, Anthony Hoffman, Matthew Escarra, Kale Franz, Claire Gmachl, Jacob Khurgin, Yamac Dikmelik
Keywords(s):
Category(s): Mechanical/Electrical Engineering
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Princeton Docket # 08-2414
Typical optical gas sensors utilize multipass
cells to probe molecular species by absorption spectroscopy. Existing multipass cells are usually
costly, large, and lack robustness, which limits their use for portable systems.
Princeton researchers have designed
and fabricated a highly compact and robust optical...
Published: 4/3/2024
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Inventor(s): Dongxia Qu, Claire Gmachl
Keywords(s):
Category(s): Mechanical/Electrical Engineering
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Princeton
University Invention # 09-2523
Quantum
Cascade (QC) wafer quality testing requires intensive processing and
characterization. Conventional techniques used for wafer quality testing include
photoluminescence, x-ray diffraction, Hall effect measurements, high resolution
x-ray diffraction, transmission electron microscopy and secondary...
Published: 3/30/2022
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Inventor(s): Claire Gmachl, Ekua Bentil
Keywords(s):
Category(s): Mechanical/Electrical Engineering
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Princeton Docket # 10-2622
Currently
available commercial single-mode QC lasers either employ distributed feedback or
external cavity technique to achieve single-mode emission. Due to the complexity and yield issue of
these techniques, the costs and thus the sale prices for single-mode QC lasers
are very high, which is a crucial barrier...
Published: 6/6/2023
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Inventor(s): Qiang Liu, Claire Gmachl, Kamil Sladek
Keywords(s):
Category(s): Mechanical/Electrical Engineering
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Princeton
University Invention # 09-2525
Researchers
in the Department of Electrical Engineering and the MIRTHE Research Center,
Princeton University have developed an eye-safe device that allows
for non-invasive measurements of dissolved gasses and compounds in a patient¿s
blood and tissue. Operating similar to a pulse-oximeter, health care...
Published: 3/30/2022
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Inventor(s): Claire Gmachl, Scott Howard, David Roberts, Amir Shanechi
Keywords(s):
Category(s): Medical Devices/Diagnostics, Mechanical/Electrical Engineering, Biotechnology/Pharmaceuticals
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