METHOD AND DEVICE FOR STABILIZING THE SPECTRUM OF A PULSED COHERENT OPTICAL SOURCE
First Claim
1. A method for stabilizing the spectrum of a pulsed coherent optical source according to which the offset frequency ω
-
0 and the repetition rate ω
r are slaved so as to slave the frequencies of the comb lines which make up its optical spectrum, characterized in that a beam that is directed onto a reference resonant optical cavity is formed on the basis of the pulsed coherent optical source and the signal formed by the reference resonant optical cavity is used to slave the offset frequency ω
0 or the repetition rate ω
r and an atomic or molecular transition is probed by means of a comb line so as to form a signal for slaving the repetition rate ω
r or the offset frequency ω
0.
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Abstract
The invention relates to a method for stabilizing the spectrum of a pulsed coherent optical source that comprises controlling the offset frequency ω0 and the repetition rate ωr in order to stabilize the frequencies of the comb lines constituting the optical spectrum thereof. The method comprises forming, from the pulsed coherent optical source (S1), a beam that is directed onto a reference resonant optical cavity (CR), and using the signal generated by the reference resonant optical cavity (CR) for controlling the offset frequency ωo or the repetition rate ωr, and probing, using a comb line, an atomic or molecular transition (AMT) in order to generate a driving signal for the repetition rate ωr or the offset frequency ω0.
9 Citations
20 Claims
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1. A method for stabilizing the spectrum of a pulsed coherent optical source according to which the offset frequency ω
-
0 and the repetition rate ω
r are slaved so as to slave the frequencies of the comb lines which make up its optical spectrum, characterized in that a beam that is directed onto a reference resonant optical cavity is formed on the basis of the pulsed coherent optical source and the signal formed by the reference resonant optical cavity is used to slave the offset frequency ω
0 or the repetition rate ω
r and an atomic or molecular transition is probed by means of a comb line so as to form a signal for slaving the repetition rate ω
r or the offset frequency ω
0. - View Dependent Claims (3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15)
-
0 and the repetition rate ω
-
2. A method for stabilizing the spectrum of a pulsed coherent optical source according to which the offset frequency ω
-
0 and the repetition rate ω
r are slaved so as to slave the frequencies of the comb lines which make up its optical spectrum, characterized in that a pulsed beam that is directed onto a reference resonant optical cavity is formed on the basis of the pulsed coherent optical source and the signal formed by the reference resonant cavity is used to slave the offset frequency ω
0 or the repetition rate ω
r and a continuous coherent optical source is used to form a continuous beam that is directed onto an atomic or molecular transition, the signal from which is used to slave the continuous coherent optical source and the difference in frequency between the pulsed and continuous optical beams is detected so as to slave the repetition rate ω
r or the offset frequency ω
0. - View Dependent Claims (7, 14, 16, 17, 18, 19, 20)
-
0 and the repetition rate ω
Specification