Measurement of the frequency of the 3.39-μm methane-stabilized laser to /spl I.chemo/3 parts in 10<sup>11</sup>

Knight, D. J. E.; Edwards, G. J.; Pearce, P R; Cross, Nicholas R.

doi:10.1109/tim.1980.4314930

Cited by 37 publications

(3 citation statements)

References 10 publications

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“…This stabilized laser used a third-harmonic lock to the centre of component Fi2) of the v3, P(7) transition of methane. Its frequency had been measured previously in this laboratory [5] by reference to the caesium standard.…”

Section: Frequency Mixing and Laser Stabilizationmentioning

confidence: 99%

Interferometric Frequency-Ratio Determination of Stabilized 473 THz and 88 THz Laser Radiations

1984

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By means of a 1-metre Fabry-Perot etalon, a measurement has been made of the frequency ratio of a He-Ne laser, stabilized to component "i" of the 11-5, R(127) transition in 127I2 at 473 THz, relative to a laser stabilized to transition ν3, P(7), component F(2)2 of methane at 88 THz. This result, fi/fCH4 = 5.359 048 172 57 which has a fractional standard deviation of 2 × 10-10, is used with the result of a previous frequency measurement of the 88 THz laser in order to calculate the frequency of the 473 THz reference laser.

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Section: Frequency Mixing and Laser Stabilizationmentioning

confidence: 99%

Interferometric Frequency-Ratio Determination of Stabilized 473 THz and 88 THz Laser Radiations

1984

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“…Harmonic mixers that make use of Josephson junctions can also be used to obtain beat notes directly between low level signals in the tens of GHz region and intermediate oscillators in the THz region [15]. In this way phase lock of these latter oscillators is possible directly from a microwave output multiplier chain, without the use of any microwave intermediate source.…”

Section: Non-linear Devicesmentioning

confidence: 99%

PHASE-COHERENT FREQUENCY SYNTHESIS SUITABLE FOR DIRECT FREQUENCY MEASUREMENTS UP TO 30 THz

1981

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Great advances have been made in the recent years in the field of phase-coherent frequency synthesis into the infrared region of the electromagnetic spectrum. Most important are the improvements achieved in the phase noise of the reference oscillators, in the modulation and control capabilities of important intermediate oscillators such as optically pumped FIR lasers, and in general in the understanding of the

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“…In the n 2 been extended up to 3500 cm 01 in order to use the P7F 2 line of methane near 2948 cm 01 measured by Knight et region the phase error is wavenumber dependent, according to the low frequency cut-off of the KCl beamal. ( 18 ) and Clairon et al ( 19 ) with an accuracy of about 10 07 cm 01 for calibrating. The maximum difference path splitter, while it is constant in the n 3 region.…”

Section: Introductionmentioning

confidence: 98%

Infrared Fundamental and First Hot Bands of O12C17O Isotopic Variants of Carbon Dioxide

Claveau

Teffo

Hurtmans

et al. 1998

Journal of Molecular Spectroscopy

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Measurement of the frequency of the 3.39-μm methane-stabilized laser to /spl I.chemo/3 parts in 10¹¹

Cited by 37 publications

References 10 publications

Interferometric Frequency-Ratio Determination of Stabilized 473 THz and 88 THz Laser Radiations

Interferometric Frequency-Ratio Determination of Stabilized 473 THz and 88 THz Laser Radiations

PHASE-COHERENT FREQUENCY SYNTHESIS SUITABLE FOR DIRECT FREQUENCY MEASUREMENTS UP TO 30 THz

Infrared Fundamental and First Hot Bands of O12C17O Isotopic Variants of Carbon Dioxide

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Measurement of the frequency of the 3.39-μm methane-stabilized laser to /spl I.chemo/3 parts in 1011

Cited by 37 publications

References 10 publications

Interferometric Frequency-Ratio Determination of Stabilized 473 THz and 88 THz Laser Radiations

Interferometric Frequency-Ratio Determination of Stabilized 473 THz and 88 THz Laser Radiations

PHASE-COHERENT FREQUENCY SYNTHESIS SUITABLE FOR DIRECT FREQUENCY MEASUREMENTS UP TO 30 THz

Infrared Fundamental and First Hot Bands of O12C17O Isotopic Variants of Carbon Dioxide

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Measurement of the frequency of the 3.39-μm methane-stabilized laser to /spl I.chemo/3 parts in 10¹¹