Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Intra-Cavity Frequency-Doubled VECSEL System for Narrow Linewidth Rydberg EIT Spectroscopy

Jul 21, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Trapped ions, Rydberg atoms, and cold plasmas Poster session


Vertical external-cavity surface-emitting lasers (VECSELs) augmented by intracavity nonlinear optical frequency conversion have emerged as an attractive light source of ultraviolet to visible light for demanding scientific applications, relative to other laser technologies. They offer high power, low phase noise, wide frequency tunability, and excellent beam quality
in a simple and inexpensive system architecture. Here, we characterize the frequency stability of an intra-cavity frequency-doubled VECSEL with 690 mW of output power at 475 nm using the delayed self-heterodyne technique and direct comparison with a commercial external-cavity diode laser (ECDL). We measure the fundamental’s Lorentzian linewidth to be 2𝜋 × 5.3(2) kHz, and the total linewidth to be 2𝜋 × 23(2) kHz. In addition, we perform Rydberg-state spectroscopy
via electromagnetically induced transparency (EIT), observing narrow 3.5 MHz full-width half maximum EIT. By doing so, we demonstrate that intra-cavity frequency-doubled VECSELs can perform precision spectroscopy at the MHz level, and are a promising tool for contemporary, and future, quantum technologies

Presenter name Joshua Hill
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Primary authors

Joshua Hill Mr William Holland (US Army Research Laboratory) Dr Paul Kunz (US Army Research Laboratory) Dr Kevin Cox (US Army Research Laboratory) David Meyer (US Army Research Laboratory)

Presentation materials

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