Diode laser with 1 Hz linewidth

We report an ultranarrow-linewidth laser spectrometer at 657 nm, consisting of a diode laser locked in a single stage to a stable high-finesse reference cavity. The system is characterized by comparison with a second independent system. From beat frequency measurements a linewidth below 1.5 Hz (FWHM...

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Veröffentlicht in:	Optics letters 2006-03, Vol.31 (6), p.736-738
Hauptverfasser:	STOEHR, H, MENSING, F, HELMCKE, J, STERR, U
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical applications Exact sciences and technology Fundamental areas of phenomenology (including applications) Instruments, apparatus, components and techniques common to several branches of physics and astronomy Interferometers Laser spectroscopy Lasers Optical instruments, equipment and techniques Optics Physics Semiconductor lasers laser diodes
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Beschreibung
Zusammenfassung:	We report an ultranarrow-linewidth laser spectrometer at 657 nm, consisting of a diode laser locked in a single stage to a stable high-finesse reference cavity. The system is characterized by comparison with a second independent system. From beat frequency measurements a linewidth below 1.5 Hz (FWHM) and a fractional instability of less than 2 x 10(-15) for 1 s of averaging time are observed.
ISSN:	0146-9592 1539-4794
DOI:	10.1364/OL.31.000736