Design of a monolithic low-threshold narrow-linewidth cw mid-IR silicon Raman laser

TL;DR

This paper proposes a design for a monolithic silicon-based mid-infrared Raman laser with low threshold and narrow linewidth, aiming to enable the first demonstration of such a laser in the mid-IR range.

Contribution

It introduces a novel design for a monolithic all-silicon mid-IR Raman laser with specific performance estimates, advancing silicon photonics.

Findings

Threshold pump power estimated below 10 mW

Output laser linewidth estimated below 50 MHz

Potential to demonstrate the first mid-IR silicon Raman laser

Abstract

We present the design and anticipated performance of an optically pumped monolithic all-silicon mid-IR (MIR) Raman laser. For the proposed 3.15 um cw laser design pumped at a 2.71 um pump wavelength, we estimate a threshold pump power of < 10 mW and an estimated output laser linewidth of <50 MHz. This design may pave the road toward demonstration of the first mid-IR silicon Raman laser.