Ii. - Les Performances Des LASERS.STABILITÉ De Préquence Et Pureté Spectrale Des Lasers

Hartmann, F.; Stoeckel, F.

doi:10.1051/jphyscol:1978105

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…The laser linewidth depends on the measurement time, τ, and is related to the phase noise. The Allan standard deviation [18] in our case is found to be 800 √(τ/1µs) Hz, well within our 10 kHz target. The Allan standard deviation corresponds to 5 kHz on a ~1/(30 kHz) time scale, in agreement with the electrical spectrum analyzer rough estimate.…”

Section: Laser Designsupporting

confidence: 83%

Dual frequency laser with two continuously and widely tunable frequencies for optical referencing of GHz to THz beatnotes

Danion¹,

Hamel²,

Frein³

et al. 2014

Opt. Express

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A dual-frequency 1.55 µm laser for CW low noise microwave, millimeter and sub millimeter wave synthesis is demonstrated, where frequency stabilization is possible on each wavelength independently. The solid state Er:Yb laser output power is 7 mW. The amplitude noise is -150 dBc/Hz at 1 MHz offset frequency. In free running regime, the frequency noise is 3.10(5)/f Hz/sqrt(Hz) (800 Hz on a 1µs timescale), better than commercial fibered or semi-conductor sources at this wavelength.

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Section: Laser Designsupporting

confidence: 83%

Dual frequency laser with two continuously and widely tunable frequencies for optical referencing of GHz to THz beatnotes

Danion¹,

Hamel²,

Frein³

et al. 2014

Opt. Express

View full text Add to dashboard Cite

show abstract

“…The spectral density can be converted into a relative Allan standard deviation [3]. For this calculation, to avoid a divergence in the data, the error signal is not corrected from the cavity pole at 8 Hz.…”

Section: ) In Loop Measurementsmentioning

confidence: 99%

Control of the laser frequency of the Virgo gravitational wave interferometer with an in-loop relative frequency stability of 1.0 × 10⁻²¹ on a 100 ms time scale

Acernese

Alshourbagy

Antonucci

et al. 2009

2009 IEEE International Frequency Control Symposium Joint With the 22nd European Frequency and Time Forum

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The measurement of the space-time structure variations induced by strong cosmic events (supernovae, coalescing binaries of neutron stars, etc.) requires an oscillator with a relative stability of 10 −21 on time scales typically ≈100 ms. We demonstrate that the Virgo interferometer with a wavelength of 1.064 µm has a laser frequency with an in-loop stability of 1.0 × 10 −21 on a 100 ms time scale, and an in-loop frequency noise of 2 × 10 −7 Hz/ √ Hz at 10 Hz. We show that this fits the specifications. Two references successively stabilize the laser frequency. The first one is a 144 m long suspended cavity; the second one is the common mode of two perpendicular 3 km long Fabry-Perot cavities. The differential mode of the relative length variations of these two optical cavities is the port where we expect the signal for the gravitational waves; this out-of-loop measurement, less sensitive to laser frequency noise, does not show up correlations with the in-loop error signal. This is the best ever performance of short term laser frequency stabilization reported.

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Laser with an in-loop relative frequency stability of1.0×10−21on a 100-ms time scale for gravitational-wave detection

Acernese¹,

Alshourbagy²,

Antonucci

et al. 2009

Phys. Rev. A

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We report on the stabilization of the laser frequency for the Virgo gravitational-wave detector. We have obtained a frequency noise level, measured in loop, of 1.9ϫ 10 −7 Hz/ ͱ Hz at 10 Hz for the 1064 nm laser; this value is limited by shot noise. The Allan standard deviation for relative frequency noise is 1.0ϫ 10 −21 on a 100-ms time scale. The spectral density of the laser frequency noise is negligible in the channel where gravitational waves ought to appear and meets the specifications for the target spectral resolution of the Virgo interferometer in the 10 Hz-10 kHz detection bandwidth.

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Ii. - Les Performances Des LASERS.STABILITÉ De Préquence Et Pureté Spectrale Des Lasers

Cited by 5 publications

References 5 publications

Dual frequency laser with two continuously and widely tunable frequencies for optical referencing of GHz to THz beatnotes

Dual frequency laser with two continuously and widely tunable frequencies for optical referencing of GHz to THz beatnotes

Control of the laser frequency of the Virgo gravitational wave interferometer with an in-loop relative frequency stability of 1.0 × 10⁻²¹ on a 100 ms time scale

Laser with an in-loop relative frequency stability of1.0×10−21on a 100-ms time scale for gravitational-wave detection

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Ii. - Les Performances Des LASERS.STABILITÉ De Préquence Et Pureté Spectrale Des Lasers

Cited by 5 publications

References 5 publications

Dual frequency laser with two continuously and widely tunable frequencies for optical referencing of GHz to THz beatnotes

Dual frequency laser with two continuously and widely tunable frequencies for optical referencing of GHz to THz beatnotes

Control of the laser frequency of the Virgo gravitational wave interferometer with an in-loop relative frequency stability of 1.0 × 10−21 on a 100 ms time scale

Laser with an in-loop relative frequency stability of1.0×10−21on a 100-ms time scale for gravitational-wave detection

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Product

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Control of the laser frequency of the Virgo gravitational wave interferometer with an in-loop relative frequency stability of 1.0 × 10⁻²¹ on a 100 ms time scale