Hybrid Dispersion Laser Scanner

Keisuke Goda(University of California, Los Angeles), Ata Mahjoubfar(University of California, Los Angeles), Chao Wang(University of California, Los Angeles), Ali Fard(University of California, Los Angeles), Jost Adam(University of California, Los Angeles), Daniel R. Gossett(California NanoSystems Institute), Ali Ayazi(University of California, Los Angeles), Elodie Sollier(University of California, Los Angeles), Omer Malik(University of California, Los Angeles), Elizabeth Lee Chen(University of California, Los Angeles), Yahui Liu(University of California, Los Angeles), R D H Brown(University of California, Los Angeles), Niusha Sarkhosh(University of California, Los Angeles), Dino Di Carlo(California NanoSystems Institute), Bahram Jalali(University of California, Los Angeles)
Scientific Reports
June 8, 2012
10.1038/srep00445
Cited by 94Open Access
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Abstract

Laser scanning technology is one of the most integral parts of today's scientific research, manufacturing, defense, and biomedicine. In many applications, high-speed scanning capability is essential for scanning a large area in a short time and multi-dimensional sensing of moving objects and dynamical processes with fine temporal resolution. Unfortunately, conventional laser scanners are often too slow, resulting in limited precision and utility. Here we present a new type of laser scanner that offers ∼1,000 times higher scan rates than conventional state-of-the-art scanners. This method employs spatial dispersion of temporally stretched broadband optical pulses onto the target, enabling inertia-free laser scans at unprecedented scan rates of nearly 100 MHz at 800 nm. To show our scanner's broad utility, we use it to demonstrate unique and previously difficult-to-achieve capabilities in imaging, surface vibrometry, and flow cytometry at a record 2D raster scan rate of more than 100 kHz with 27,000 resolvable points.

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