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New Design Results in Compact,Highly Efficient Frequency Comb
New Design Results Compact Highly Efficient Frequency Comb
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2017/3/30
Northwestern Engineering researchers have designed a quantum cascade laser (QCL) frequency comb that is dramatically more efficient than previous iterations. Led by Manijeh Razeghi, researchers i...
Building a More Versatile Frequency Comb
More Versatile Frequency Comb
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2015/3/4
Frequency combs are the rulers of light. By counting a wavelength’s many oscillations, they measure distance and time with extraordinary precision and speed.
Since the discovery of optical frequency ...
Generation of 1500-tone, 120nm-wide Ultraflat Frequency Comb by Single CW Source
Generation of 1500-tone 120 nm-wide Ultraflat Frequency Comb Single CW Source
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2014/11/6
Dense 1500-tone frequency comb is derived from a single CW laser. Sub-2dB flatness was measured over 120 nm, with 40 dB optical signal-to-noise-ratio. The new generator uses regenerative shock formati...
Offset frequency dynamics and phase noise properties of a self-referenced 10 GHz Ti:sapphire frequency comb
Offset frequency dynamics phase noise properties self-referenced 10 GHz sapphire frequency comb
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2011/8/11
Abstract: This paper shows the experimental details of the stabilization scheme that allows full control of the repetition rate and the carrier-envelope offset frequency of a 10 GHz frequency comb bas...
Frequency Comb Velocity-Modulation Spectroscopy
Frequency Comb Velocity Modulation Spectroscopy Atomic Physics
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2011/8/4
Abstract: We have demonstrated a new technique that provides massively parallel comb spectroscopy sensitive specifically to ions through the combination of cavity-enhanced direct frequency comb spectr...
Spectral and temporal characterization of a fused-quartz microresonator optical frequency comb
Spectral and temporal characterization fused-quartz microresonator optical frequency comb
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2011/9/1
We report on the fabrication of high-Q, fused-quartz microresonators and the parametric genera-tion of a frequency comb with 36 GHz line spacing using them. We have characterized the intrinsic stabili...
Surface Acoustic Wave Frequency Comb
Optical Surface Acoustic
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2011/8/31
We report on realization of an efficient triply-resonant coupling between two long lived optical modes and a high frequency surface acoustic wave (SAW) mode of the same monolithic crystalline whisperi...
Microwave Photonic Filters with a Directly Generated Gaussian-shaped Optical Frequency Comb
Microwave Photonic Filters Directly Generated Gaussian-shaped Optical Frequency Comb
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2015/5/21
Using electro-optic modulators, we generate a 41-line 10-GHz spaced Gaussian-shaped optical comb. We use this comb to demonstrate apodized microwave photonic filters with greater than 43-dB sidelobe s...
A Broadband, Spectrally Flat, High Rep-rate Frequency Comb: Bandwidth Scaling and Flatness Enhancement of Phase Modulated CW through Cascaded Four-Wave Mixing
Broadband Spectrally Flat High Rep-rate Frequency Comb Bandwidth Scaling Flatness Enhancement Phase Modulated CW Cascaded Four-Wave Mixing
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2015/5/20
We demonstrate a scheme to scale the bandwidth by several times while enhancing spectral flatness of frequency combs generated by intensity and phase modulation of CW lasers using cascaded four-wave m...
Optical Frequency Comb Generators Based on Fabry-Perot Electro-Optic Modulation
Optical frequency comb generator Fabry-Perot electro-optic modulator Optical frequency standard
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2009/6/12
Optical frequency comb generators based on Fabry-Perot electro-optic modulator and its applications were introduced. The applications have been spreading beyond the first purpose as an optical frequen...
A Filtered Optical Frequency Comb Generator as a Stable and Tunable Short Pulse Source
Filtered Optical Frequency Comb Generator Tunable Short Pulse Source
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2015/7/31
Phase characteristics of pulses from an optical frequency comb generator are studied. Simple filtering is shown suitable for generating stable high quality short pulses of an adjustable pulse width.
First 2D Pictures of a ‘Frequency Comb’（图）
atoms molecules
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2007/2/8
Feb. 7, 2007，BOULDER, Colo.—Physicists at the Commerce Department’s National Institute of Standards and Technology (NIST) have taken the first ever two-dimensional pictures of a “frequency comb,” prov...