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Pump-Controlled Modal Interactions in Microdisk Lasers
Seng Fatt Liew, Li Ge, Brandon Redding +2
We demonstrate an effective control of nonlinear interactions of lasing modes in a semiconductor microdisk cavity by shaping the pump profile. A target mode is selected at the expe…
Low-spatial coherence electrically-pumped semiconductor laser for speckle-free full-field imaging
B. Redding, A. Cerjan, X. Huang +4
The spatial coherence of laser sources has limited their application to parallel imaging and projection due to coherent artifacts, such as speckle. In contrast, traditional incoher…
High-resolution and broadband all-fiber spectrometers
Brandon Redding, Mansoor Alam, Martin Seifert +1
The development of optical fibers has revolutionized telecommunications by enabling long-distance broad-band transmission with minimal loss. In turn, the ubiquity of high-quality l…
Active control of emission directionality of semiconductor microdisk lasers
Seng Fatt Liew, Brandon Redding, Li Ge +2
We demonstrate lasing mode selection in nearly circular semiconductor microdisks by shaping the spatial profile of optical pump. Despite of strong mode overlap, adaptive pumping su…