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RESEARCH.

Publication: Electronic Materials Update
Publication Date: 01-APR-05
Format: Online - approximately 707 words
Delivery: Immediate Online Access

Article Excerpt
Raman Laser Chip Invented. A tiny chip based on an InGaAs/InAlAs structure is the world's first electrically-driven Raman laser, according to a report in Optics.org. Although lasers that rely on Raman scattering (a nonlinear optical effect that amplifies light signals) have been demonstrated...

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...before, to date they have always required a powerful external laser to pump them. Now a team of scientists from Harvard University, Texas A&M University and Bell Labs has combined the advantages of nonlinear optical devices and semiconductor injection lasers to circumvent this problem. The design exploits Raman scattering between quantum wells within the active region of a quantum cascade laser (QCL)...

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