Ling Y Liu

Title: Ling Y Liu: Innovator in Tunable Laser Technology

Introduction

Ling Y Liu is a prominent inventor based in White Plains, NY (US). She has made significant contributions to the field of semiconductor lasers, particularly through her innovative work on coupled quantum well tunable lasers. Her research has implications for optical communications and computing, showcasing her expertise in this advanced technology.

Latest Patents

Ling Y Liu holds a patent for her invention titled "Coupled Quantum Well Tunable Laser." This invention utilizes coupled quantum wells in the active region of a semiconductor laser to modulate both the frequency and amplitude of the light output. The design features a graded index of refraction semiconductor double heterostructure laser, with the active region consisting of two quantum wells approximately 50 Angstroms wide, separated by a barrier layer of about 20 Angstroms. The materials used include intrinsic GaAs for the quantum wells and Al.sub.x Ga.sub.1-x As for the barrier layer, with x=0.23. The laser operates as a p-i-n type structure, allowing for modulation of the output wavelength over a 1.5 volt operating range.

Career Highlights

Ling Y Liu is associated with International Business Machines Corporation (IBM), where she has been able to apply her innovative ideas in a collaborative environment. Her work has not only advanced the technology of tunable lasers but has also contributed to the broader field of optical communications.

Collaborations

Ling has worked alongside notable colleagues such as Tadashi Fukuzawa and Emilio E Mendez. Their collaborative efforts have further enhanced the research and development of advanced laser technologies.

Conclusion

Ling Y Liu's contributions to the field of tunable lasers exemplify her innovative spirit and dedication to advancing technology. Her work continues to influence the realms of optical communications and computing, marking her as a significant figure in the field.