Optical millimeter-wave oscillator disciplined by rotational spectroscopy
AssigneeImra America, Inc.
InventorsAntoine Jean Gilbert Rolland, James Greenberg, Brendan Heffernan, Rubab Amin
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Abstract
A photonic millimeter-wave oscillator is based on a heterodyne beatnote of two continuous wave lasers and is configured to provide a narrow linewidth output when the frequency difference is disciplined with rotational spectroscopy of molecules using frequency modulation spectroscopy.
Claims21
A photonic millimeter-wave oscillator, based on a heterodyne beatnote of two continuous wave lasers, configured to provide a narrow linewidth output when a frequency difference between the two continuous wave lasers is disciplined with rotational spectroscopy of molecules using frequency modulation spectroscopy, wherein one of the two continuous wave lasers is frequency- or phase-modulated such that a resulting signal generated through photomixing of the two continuous wave lasers is correspondingly modulated, enabling demodulation of the signal to reveal molecular absorption features.
A photonic millimeter-wave oscillator, based on the photodetection of an optical pulse train generated by an optical frequency comb, configured to provide a continuous-wave narrow linewidth output when a repetition rate frequency of the optical pulse train is disciplined with rotational spectroscopy of molecules using frequency modulation spectroscopy.
A method of stability transfer of an optical pulse train repetition rate noise properties to two diode lasers through optical injection, the method comprising providing a narrow linewidth output when a frequency difference between the two diode lasers is disciplined with rotational spectroscopy of molecules using frequency modulation spectroscopy.
An electro-optic frequency comb having a repetition rate disciplined by rotational spectroscopy of molecules through a feedback control of a microwave oscillator driving electro-optic modulators, the comb comprising two continuous wave lasers, wherein one of the two continuous wave lasers is frequency- or phase-modulated such that a resulting signal generated through photomixing of the two continuous wave lasers is correspondingly modulated, enabling demodulation of the signal to reveal molecular absorption features.
A method of generating an optical pulse train pre-stabilized with two Stokes waves, the method comprising generating the two Stokes waves using stimulated Brillouin scattering in a fiber cavity into which two diode lasers are optically injected with a frequency difference disciplined by rotational spectroscopy of molecules, wherein one of the two diode lasers is frequency- or phase-modulated such that a resulting signal generated through photomixing of the two diode lasers is correspondingly modulated, enabling demodulation of the signal to reveal molecular absorption features.
A method of generating a clock signal and stable baseband or microwave oscillator through electro-optic division of two optical lines, with a frequency difference disciplined by rotational spectroscopy of molecules, through phase-locking of the microwave oscillator driving the electro-optic modulators that generates an error signal.
A method of generating a clock signal and stable baseband or microwave oscillator through optical frequency division of an optically carried millimeter-wave signal with the synchronization of an optical pulse train with a repetition rate frequency in the microwave and RF domain.
A method of cancellation of residual amplitude modulation in an optical phase modulator comprising an heterodyne beatnote of two optical lines disciplined by rotational spectroscopy of molecules.
Dependencies are inferred from the claim text.