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  4. Full stabilization and characterization of an optical frequency comb from a diode-pumped solid-state laser with GHz repetition rate
 
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Full stabilization and characterization of an optical frequency comb from a diode-pumped solid-state laser with GHz repetition rate

Auteur(s)
Hakobyan, Sargis 
Institut de physique 
Wittwer, Valentin 
Institut de physique 
Brochard, Pierre 
Institut de physique 
Gürel, Kutan
Schilt, Stephane 
Institut de physique 
Mayer, Aline S
Keller, Ursula
Südmeyer, Thomas 
Institut de physique 
In
Optics Express, Optical Society of America, 2017/25/17/20437-20453
Résumé
We demonstrate the first self-referenced full stabilization of a diode-pumped solid-state laser (DPSSL) frequency comb with a GHz repetition rate. The Yb:CALGO DPSSL delivers an average output power of up to 2.1 W with a typical pulse duration of 96 fs and a center wavelength of 1055 nm. A carrier-envelope offset (CEO) beat with a signal-to-noise ratio of 40 dB (in 10-kHz resolution bandwidth) is detected after supercontinuum generation and <i>ƒ</i>-to-2<i>ƒ</i> interferometry directly from the output of the oscillator, without any external amplification or pulse compression. The repetition rate is stabilized to a reference synthesizer with a residual integrated timing jitter of 249 fs [10 Hz – 1 MHz] and a relative frequency stability of 10<sup>−12</sup>/s. The CEO frequency is phase-locked to an external reference via pump current feedback using home-built modulation electronics. It achieves a loop bandwidth of ∼150 kHz, which results in a tight CEO lock with a residual integrated phase noise of 680 mrad [1 Hz – 1 MHz]. We present a detailed characterization of the GHz frequency comb that combines a noise analysis of the repetition rate <i>ƒ</i><sub>rep</sub>, of the CEO frequency <i>ƒ</i><sub>CEO</sub>, and of an optical comb line at 1030 nm obtained from a virtual beat with a narrow-linewidth laser at 1557 nm using a transfer oscillator. An optical comb linewidth of about 800 kHz is assessed at 1-s observation time, for which the dominant noise sources of <i>ƒ</i><sub>rep</sub> and <i>ƒ</i><sub>CEO</sub> are identified.
Identifiants
https://libra.unine.ch/handle/123456789/4285
_
10.1364/OE.25.020437
Type de publication
journal article
Dossier(s) à télécharger
 main article: Hakobyan_S.-Full_stabilization-20170901.pdf (3.48 MB)
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