Atom-resonant squeezed light from a tunable monolithic ppRKTP parametric amplifier

TL;DR

This paper reports the generation of atom-resonant squeezed light at 795 nm using a tunable, monolithic PPKTP parametric oscillator, demonstrating effective vacuum squeezing unaffected by nonlinear dispersive effects.

Contribution

It introduces a novel tunable, monolithic PPKTP-based parametric oscillator for producing atom-resonant squeezed light at rubidium D1 line.

Findings

Vacuum squeezing achieved at 795 nm

Squeezing remains unaffected by dispersive nonlinearity

Tunable, monolithic design enhances stability and control

Abstract

We demonstrate vacuum squeezing at the D1 line of atomic rubidium (795 nm) with a tunable, doubly-resonant, monolithic sub-threshold optical parametric oscillator in periodically-poled Rb-doped potassium titanyl phosphate. The squeezing appears to be undiminished by a strong dispersive optical nonlinearity recently observed in this material.