Title: Three-photon excitation source at 1250 nm generated in a dual zero dispersion wavelength nonlinear fiber

Abstract

Here, we demonstrate 1250 nm pulses generated in dual-zero dispersion photonic crystal fiber capable of three-photon excitation fluorescence microscopy. The total power conversion efficiency from the 28 fs seed pulse centered at 1075 nm to pulses at 1250 nm, including coupling losses from the nonlinear fiber, is 35%, with up to 67% power conversion efficiency of the fiber coupled light. Frequency-resolved optical gating measurements characterize 1250 nm pulses at 0.6 nJ and 2 nJ, illustrating the change in nonlinear spectral phase accumulation with pulse energy even for nonlinear fiber lengths < 50 mm. The 0.6 nJ pulse has a 26 fs duration and is the shortest nonlinear fiber derived 1250 nm pulse yet reported (to the best of our knowledge). The short pulse durations and energies make these pulses a viable route to producing light at 1250 nm for multiphoton microscopy, which we we demonstrate here, via a three-photon excitation fluorescence microscope.

Authors:

Domingue, Scott R. ^[1]; Bartels, Randy A. ^[2]

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+ Show Author Affiliations

1. Colorado State Univ., Fort Collins, CO (United States). Dept. of Electrical and Computer Engineering
2. Colorado State Univ., Fort Collins, CO (United States). School of Biomedical Engineering; Colorado State Univ., Fort Collins, CO (United States). Dept. of Electrical and Computer Engineering

Publication Date:

Thu Dec 04 00:00:00 EST 2014

Research Org.:

Kapteyn Murnane Laboratories Inc., Boulder, CO (United States)

Sponsoring Org.:

USDOE Office of Science (SC)

OSTI Identifier:

1455228

Grant/Contract Number:  

SC0011332

Resource Type:

Accepted Manuscript

Journal Name:

Optics Express

Additional Journal Information:

Journal Volume: 22; Journal Issue: 25; Journal ID: ISSN 1094-4087

Publisher:

Optical Society of America (OSA)

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION; nonlinear optics; fibers; supercontinuum generation; nonlinear microscopy