Spectro-temporal encoded multiphoton microscopy and fluorescence lifetime imaging at kilohertz frame-rates.

Abstract:

:Two-Photon Microscopy has become an invaluable tool for biological and medical research, providing high sensitivity, molecular specificity, inherent three-dimensional sub-cellular resolution and deep tissue penetration. In terms of imaging speeds, however, mechanical scanners still limit the acquisition rates to typically 10-100 frames per second. Here we present a high-speed non-linear microscope achieving kilohertz frame rates by employing pulse-modulated, rapidly wavelength-swept lasers and inertia-free beam steering through angular dispersion. In combination with a high bandwidth, single-photon sensitive detector, this enables recording of fluorescent lifetimes at speeds of 88 million pixels per second. We show high resolution, multi-modal - two-photon fluorescence and fluorescence lifetime (FLIM) - microscopy and imaging flow cytometry with a digitally reconfigurable laser, imaging system and data acquisition system. These high speeds should enable high-speed and high-throughput image-assisted cell sorting.

journal_name

Nat Commun

journal_title

Nature communications

authors

Karpf S,Riche CT,Di Carlo D,Goel A,Zeiger WA,Suresh A,Portera-Cailliau C,Jalali B

doi

10.1038/s41467-020-15618-w

subject

Has Abstract

pub_date

2020-04-28 00:00:00

pages

2062

issue

1

issn

2041-1723

pii

10.1038/s41467-020-15618-w

journal_volume

11

pub_type

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