Method for wideband spectrally equalized frequency comb generation
First Claim
1. A method for wideband frequency comb generation comprising:
- (a) creating a seed waveform by modulating a single laser output;
(b) chirping the seed waveform created in step (a) to enable its temporal compression and peak intensity increase;
(c) compressing the chirped seed waveform in a dispersive waveguide in order to increase the intensity peak of the waveform and increase efficiency of mixing;
(d) employing a nonlinear optical transfer element that can discriminate the waveforms with respect to optical intensity; and
(e) mixing the waveforms to generate the frequency comb.
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Abstract
The present invention relates to method for spectrally equalized frequency comb generation. In order to carry this method, the following steps are followed: seed laser or lasers are modulated to acquire frequency chirp necessary to enable temporal compression and an increase in peak optical intensity necessary for an efficient nonlinear optical mixing process to occur; the compressed waveform is reshaped by nonlinear-transfer optical element and subsequently used to generate frequency comb in nonlinear waveguide. Ultimately, at the conclusion of these steps, a frequency comb is generated with substantially flat optical spectrum, while retaining variability with respect to the frequency pitch, high coherency and substantially wide spectral band of coverage.
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Citations
17 Claims
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1. A method for wideband frequency comb generation comprising:
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(a) creating a seed waveform by modulating a single laser output; (b) chirping the seed waveform created in step (a) to enable its temporal compression and peak intensity increase; (c) compressing the chirped seed waveform in a dispersive waveguide in order to increase the intensity peak of the waveform and increase efficiency of mixing; (d) employing a nonlinear optical transfer element that can discriminate the waveforms with respect to optical intensity; and (e) mixing the waveforms to generate the frequency comb. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for wideband frequency comb generation comprising:
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(a) creating a seed waveform by beating between two lasers; (b) chirping the seed waveform created in step (a) to enable its temporal compression and peak intensity increase; (c) compressing the chirped seed waveform in a dispersive waveguide in order to increase the intensity peak of the waveform and increase efficiency of mixing; (d) employing a nonlinear optical transfer element that can discriminate the waveforms with respect to optical intensity; and (e) mixing the waveforms to generate the frequency comb. - View Dependent Claims (15, 16, 17)
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Specification