A Packaged and Ultrastable Passive GHz Comb Waveguide Laser
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(Published version)
Date
2025
Authors
Lancaster, D.G.
Zhang, W.
Otten, D.E.
Editors
Clarkson, W.A.
Shori, R.K.
Shori, R.K.
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Conference paper
Citation
Proceedings of SPIE, 2025 / Clarkson, W.A., Shori, R.K. (ed./s), vol.13341
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2025 Conference on Solid State Lasers (26 Jan 2025 - 27 Jan 2025 : CA, San Francisco)
Abstract
We report a compact and packaged ~1550 nm planar erbium waveguide free-running frequency comb chip laser. The gain medium is erbium ytterbium cerium co-doped fluorozirconate glass waveguide chips that have a bandwidth of up to 15 nm wide (FWMH), P=10 mW (single polarisation in polarisation maintaining fibre), and pulsewidths down to 310 fs when the cavity is configured for a 1 GHz repetition rate. The comb includes an ability to modulate the cavity length by a combined mechanical/ piezo actuator allowing tuning of the repetition rate by ~ 10 MHz. The presentation covers the unique comb architecture, spectral/ temporal characteristics, RF spectrum, phase noise and relative intensity noise.
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Copyright 2025 SPIE