Self-mixing imaging sensor using a monolithic VCSEL array with parallel readout

被引:52
作者
Lim, Yah Leng [1 ]
Nikolic, Milan [1 ]
Bertling, Karl [1 ]
Kliese, Russell [1 ]
Rakic, Aleksandar D. [1 ]
机构
[1] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia
关键词
OPTICAL FEEDBACK; LASER;
D O I
10.1364/OE.17.005517
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The advent of two-dimensional arrays of Vertical-Cavity Surface-Emitting Lasers (VCSELs) opened a range of potential sensing applications for nanotechnology and life-sciences. With each laser independently addressable, there is scope for the development of high-resolution full-field imaging systems with electronic scanning. We report on the first implementation of a self-mixing imaging system with parallel readout based on a monolithic VCSEL array. A self-mixing Doppler signal was acquired from the variation in VCSEL junction voltage rather than from a conventional variation in laser power, thus markedly reducing the system complexity. The sensor was validated by imaging the velocity distribution on the surface of a rotating disc. The results obtained demonstrate that monolithic arrays of Vertical-Cavity lasers present a powerful tool for the advancement of self-mixing sensors into parallel imaging paradigms and provide a stepping stone to the implementation of a full-field self-mixing sensor systems. (C) 2009 Optical Society of America
引用
收藏
页码:5517 / 5525
页数:9
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