Work

Low noise resonant amplification by optical injection locking and residual phase noise cancellation

Year: 2026

Type: article

Abstract: We demonstrate a resonant optical amplifier that combines injection locking with feed-forward cancellation of residual phase noise. The wavelength-agnostic architecture uses a diode laser as a power amplifier while preserving the spectral purity of a weak reference. The residual phase error is measured via optical heterodyne detection and canceled using feed-forward phase correction. The amplifier achieves up to 38 dB phase noise reduction over injection locking alone at Fourier frequencies above 1 kHz for injection ratios down to -57 dB. This approach enables amplification of low-power, low-noise optical references, including individual lines from optical frequency combs with minimal ASE.

Source: Optics Letters

DOI: 10.1364/ol.603468

Authors: Y. Lange Simmons, James Greenberg, Brendan M. Heffernan, Antoine Rolland

Institution: IMRA America (United States)

Language: English

Topic: Semiconductor Lasers and Optical Devices

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7164835530

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Cites: 22

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Related to: 10