29 W High Power CW Supercontinuum Source

TL;DR

This paper reports a high-power continuous-wave supercontinuum source reaching 29 W, with broad spectral coverage and high power density, achieved using a short photonic crystal fiber and detailed analysis of its spectral dynamics.

Contribution

The study introduces a high-power CW supercontinuum generation method using a short PCF with two zero dispersion wavelengths, achieving the highest spectral power density reported.

Findings

Supercontinuum spans 1.06 to 1.67 um with 29 W power.

Spectral power density exceeds 50 mW/nm up to 1.4 um.

Short PCF enables continuum expansion beyond water loss at 1.4 um.

Abstract

A 29 W CW supercontinuum spanning from 1.06 to 1.67 um is generated in a short length of PCF with two zero dispersion wavelengths. The continuum has the highest spectral power density, greater than 50 mW/nm up to 1.4 um, reported to date. The use of a short length of PCF enables the continuum to expand beyond the water loss at 1.4 um. The dynamics of the continuum evolution are studied experimentally and numerically with close attention given to the effects of the water loss and the second zero dispersion wavelength.