2.5 W GaSb-based VECSEL at 2062.4 nm with an absolute wavelength stability below 1 MHz
We present a GaSb-based vertical-external-cavity surface-emitting laser (VECSEL) tailored as a low-noise pump source for quantum frequency conversion. The 2062.4 nm emitting VECSEL emits a single-frequency output power of 2.5 W in a linear cavity with an intracavity birefringent filter. With no additional means of wavelength stabilization, the emission wavelength drift over 15 hours was less than 7 pm after the initial thermalization period. After locking the VECSEL to a frequency comb, the beating frequency between the laser and the comb light was characterized. The measurement confirmed a linewidth of less than 350 kHz (FWHM), and the absolute wavelength deviation over 22 hours had a standard deviation of 103.6 kHz. Relative intensity noise (RIN) measurements showed an integrated RIN of 0.15% root mean squared (RMS).
Authors
- Ronald Holzwarth (ORCID: https://orcid.org/0000-0002-1589-8496)
- Maximilian Bradler
- Andreas Bächle
- Elke Diwo-Emmer
- Christoph Becher (ORCID: https://orcid.org/0000-0003-4645-6882)
- Marcel Rattunde (ORCID: https://orcid.org/0009-0006-4039-1570)
- Marlon Schäfer (ORCID: https://orcid.org/0009-0005-2075-3346)
- Milad Yahyapour (ORCID: https://orcid.org/0000-0001-7213-3724)
- P. Holl (ORCID: https://orcid.org/0000-0002-4041-5628)
- Steffen Adler
Institutions
- Fraunhofer Institute for Applied Solid State Physics (DE)
- Menlo Systems (Germany) (DE)
- Saarland University (DE)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-10-20
- DOI
- https://doi.org/10.1063/5.0293416
- Citations
- 1
- Primary Topic
- Semiconductor Lasers and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.73