Company Filing History:
11 out of 7,865 
1 out of 12 
1 out of 14,059 
Years Active: 1993-2000
Title: Hwa Cheng: Innovator in Laser Diode Technology
Introduction
Hwa Cheng is a prominent inventor based in Woodbury, MN, known for her significant contributions to the field of semiconductor technology. With a total of 13 patents to her name, she has made remarkable advancements in laser diode technology and gas plasma sources.
Latest Patents
One of Hwa Cheng's latest patents is the II-VI laser diodes with short-period strained-layer superlattice quantum. This innovative laser diode is designed to emit a coherent beam of light in the blue and/or green portions of the spectrum. It features a plurality of layers of II-VI semiconductor forming a pn junction, including a first light-guiding layer. The short-period strained-layer superlattice (SPSLS) CdZnSe quantum well active layer is strategically positioned within the pn junction, supported by a substrate. Additionally, first and second electrodes on opposite sides of the layers couple electrical energy to the laser diode.
Another notable patent is the unibody gas plasma source technology. This invention consists of a unibody, monolithic, one-piece PBN plasma chamber for an MBE gas plasma source. The chamber has a cylindrical configuration with at least one effusion orifice and a gas inlet opening. The gas inlet opening is communicatively connected to an elongated, tubular inlet member, which is coupled to a liquid-cooled gas source by an intermediary connection member made of refractory metal. This design minimizes leakage and maximizes efficiency, showcasing Hwa Cheng's innovative approach to plasma source technology.
Career Highlights
Hwa Cheng has worked with several notable companies throughout her career, including Minnesota Mining and Manufacturing Company and Chorus, LLC. Her experience in these organizations has allowed her to develop and refine her expertise in semiconductor technologies and plasma sources.
Collaborations
Hwa Cheng has collaborated with esteemed colleagues such as James M DePuydt and Michael Albert Haase. These partnerships have contributed to her success and the advancement of her inventions.
Conclusion
Hwa Cheng's innovative work in laser diode technology and gas plasma sources has made her a significant figure in the field of semiconductor technology. Her contributions continue to influence advancements in these areas, showcasing her dedication to innovation and excellence.
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