Work

SESAM mode-locked Nd:fiber laser at 920 nm for nonlinear optical microscopy

Year: 2025

Type: article

Abstract: We report on the design, modeling, and characterization of a diode-pumped Nd-doped all-polarization-maintaining fiber laser operating at 920 nm in a passively mode-locked regime enabled by a SESAM. The laser generates pulse trains with a repetition frequency of 18.5 MHz and an average output power of 0.26 mW in an optical bandwidth of 0.6 nm. Within the broad integration bandwidth from 50 Hz to 9.25 MHz, the Nd:fiber laser exhibits ultra-low intensity noise, at a relative level of 0.04%, and timing jitter below 2 ps. Moreover, we demonstrate the ability to lock the laser's repetition frequency to that of an Yb-doped oscillator, enabling stimulated Raman scattering microscopy in the fingerprint region.

Source: Optics Express

DOI: 10.1364/oe.557820

Authors: Fedele Pisani, Gabriele Di Noia, Francesco Crisafi, Matteo Negro, Giulio Cerullo, Gianluca Galzerano

Institutions: Istituto di Fotonica e Nanotecnologie, National Research Council

Language: English

Topic: Advanced Fiber Laser Technologies

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Ministero dell'Università e della Ricerca