Hybrid dispersion laser scanner.
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.
Department of Electrical Engineering, University of California, Los Angeles, California 90095, USA. goda@ee.ucla.edu
K
K
Goda
A
A
Mahjoubfar
C
C
Wang
A
A
Fard
J
J
Adam
D R
DR
Gossett
A
A
Ayazi
E
E
Sollier
O
O
Malik
E
E
Chen
Y
Y
Liu
R
R
Brown
N
N
Sarkhosh
D
D
Di Carlo
B
B
Jalali
D003952:Diagnostic Imaging / Q000295:instrumentation / Q000379:methods; D005434:Flow Cytometry / Q000295:instrumentation / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D007834:Lasers; D018613:Microscopy, Confocal / Q000295:instrumentation / Q000379:methods; D015203:Reproducibility of Results; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods