Scott A Diddams

6850543, Feb 1, 2005

Mar 29, 2001

10/240380

Steven T. Cundiff - Boulder CO, US
John L. Hall - Boulder CO, US
Scott A. Diddams - Louisville CO, US
David J. Jones - Boulder CO, US

The United States of America as represented by the Secretary of Commerce - Washington DC

H01S 3098
H01S 310

372 18, 372 25

Disclosed is a system and method for stabilizing the carrier-envelope phase of the pulses emitted by a femtosecond mode-locked laser by using the powerful tools of frequency-domain laser stabilization. Control of the pulse-to-pulse carrier-envelope phases was confirmed using temporal cross correlation. This phase stabilization locks the absolute frequencies emitted by the laser, which is used to perform absolute optical frequency measurements that were directly referenced to a stable microwave clock.

60259116, Feb 15, 2000

Nov 14, 1995

8/555717

Scott A. Diddams - Albuquerque NM
Jean-Claude M. Diels - Albuquerque NM
Prien Steffen - Bad Kissingen, DE

University of New Mexico - Albuquerque NM

G01B 902

356345

A measuring device completely determines the characteristics of light pulses in a beam of ultrashort light pulses using optoelectronic detectors instead of second harmonic generating crystals. An optical system provides a spatial dispersion of an ultrashort pulse in at least one dimension. A two slit filter intercepts the dispersed beam whereby the transmitted spectra combine to provide a beat frequency within selected limits. An optoelectronic detector detects the beat frequency and outputs a signal functionally related to the beat frequency that contains spectral phase information that is sufficient to characterize the pulse. In another embodiment, a beam splitter splits the beam into first and second beams, wherein one of the beams is time delayed and the other beam is spectrally dispersed. The two beam are recombined to provide information about the spectral phase of the ultrashort pulse. The pulse is completely characterized when the spectral phase information is combined with amplitude information.

62016385, Mar 13, 2001

Jan 13, 1999

9/229436

John Lewis Hall - Boulder CO
Scott Alan Diddams - Boulder CO
Long-Sheng Ma - Boulder CO
Jun Ye - Pasadena CA

University Technology Corporation - Boulder CO
NIST - Washington DC

H01S 300
H01S 310

359346

A low-loss comb-generating optical cavity including an optical amplifier and a microwave-driven electro-optic modulator crystal, produces a comb of optical frequency sidebands having spectral lines equally spaced around the frequency of an input laser beam incident on the comb-generating cavity. The comb-generating cavity includes an input mirror movable along the beam propagation direction, and a fixed position output mirror located at time synchronous distances of both the input laser wavelength and modulation wavelength. The comb-generating cavity and its microwave driven modulator are in resonance with the input laser beam, and provide iterative or recirculating beam action that transfers the input optical frequency of the laser, sideband by sideband, to remote and precisely known comb frequencies offset from, and centered on, the input laser frequency. Optical parametric amplification within the comb-generating cavity extends the sideband or comb spectrum and sharpens the time domain impulse represented by the cavity circulating fields. A relatively short bandpass filter optical cavity receives the comb output of the comb-generating cavity and is made up of the fixed-position mirror and a third mirror movable along the beam propagation direction.

20230059433, Feb 23, 2023

May 11, 2022

17/742252

- Denver CO, US
Josue Davila-Rodriguez - Boulder CO, US
Franklyn John Quinlan - Longmont CO, US
John Teufel - Erie CO, US
Scott A. Diddams - Louisville CO, US
Jose Aumentado - Boulder CO, US

H04B 10/70
H04B 10/2575

An operational environment is disclosed herein that includes a cryogenic environment and a signal source. The cryogenic environment includes a signal target, an optical link, signal converter devices, and an electrical link. Outside of the cryogenic environment, the signal source generates an electric signal. An electric-to-optical converter converts the electrical signal into an optical signal. The optical link delivers the optical signal into the cryogenic environment. Inside the cryogenic environment, an optical-to-electrical converter converts the optical signal back into an electrical signal. The optical-to-electrical converter transfers the electric signal to the signal target.

20200076149, Mar 5, 2020

Sep 5, 2019

16/561564

- Gaithersburg MD, US
David Richard Carlson - Boulder CO, US
Daniel Durand Hickstein - Boulder CO, US
Scott Alan Diddams - Louisville CO, US

H01S 3/00
H01S 3/11

An ultrafast electro-optic laser makes a stabilized comb and includes: a comb generator that produces a frequency comb; a dielectric resonant oscillator; a phase modulator in communication with the dielectric resonant oscillator; an intensity modulator in communication with the phase modulator; an optical tailor in communication with the comb generator and that produces tailored light; a filter cavity in communication with the intensity modulator; a pulse shaper in communication with the filter cavity; a highly nonlinear fiber and compressor in communication with the pulse shaper; an interferometer in communication with the optical tailor and that produces a difference frequency from the tailored light; and an electrical stabilizer in communication with the interferometer and the comb generator and that produces the stabilization signal with a stabilized local oscillator cavity that produces a stabilized local oscillator signal that is converted into the stabilization signal and communicated to the dielectric resonant oscillator.

20190252848, Aug 15, 2019

Feb 13, 2019

16/275035

- Gaithersburg MD, US
Scott Diddams - Louisville CO, US
Andrew Ludlow - Longmont CO, US
Frederick Baynes - Kensington, AU
Josue Davila-Rodriguez - Boulder CO, US

H01S 3/13
H01S 3/00

An optical reference cavity includes: a cell that includes: a cylindrical body; end faces; an optical canal having an interior cylindrical geometry; and an exterior surface having an exterior cylindrical geometry; mirrors disposed on the end faces; an aspect ratio that is less than 1; a compression clamp that holds the cell through compression and includes compression platens disposed on the end faces so that the compression platens exert a compressive force to the end faces at a radius from a central axis of the cell so that the cell is compressed by the compression clamp, and a length of the optical canal is unperturbed to first order with a magnitude of the compressive force; and a compression intermediary interposed between the compression platens and end faces, wherein the length of the optical canal is insensitive to vibration coupled to the cell by the compression clamp and compression intermediaries.

20180095003, Apr 5, 2018

May 8, 2017

15/590005

- Pasadena CA, US
- Oakland CA, US
- Gaithersburg MD, US
Scott B. Papp - Boulder CO, US
Scott A. Diddams - Boulder CO, US

G01M 11/00
G05D 25/02
H01S 3/10
H01S 3/08

A dual-comb optical-frequency comb generator includes a tunable comb-generating laser, a coarse-comb generator, a fine-comb generator, a second harmonic generator, a coarse-comb offset photodetector, a dual-comb offset photodetector, and a fine-comb photodetector. The coarse comb is self-referencing and coupled to the fine comb so as to enable absolute determination of the frequencies of the fine comb.

20150236784, Aug 20, 2015

Jan 26, 2015

14/605977

Kerry Vahala - Pasadena CA, US
Scott Diddams - Louisville CO, US
Jiang Li - Pasadena CA, US
Xu Yi - Pasadena CA, US

H04B 10/2507
H04B 10/2575

A microwave-frequency source at frequency fcomprises: a dual optical-frequency reference source, an electro-optic sideband generator, an optical bandpass filter, an optical detector, a reference oscillator, an electrical circuit, and a voltage-controlled oscillator (VCO). The sideband generator modulates dual optical reference signals at vand vto generate sideband signals at vnfand vnf. The bandpass filter transmits sideband signals at v+Nfand v−Nf. The optical detector generates a beat note at (v−Nf)−(v+Nf). The beat note and a reference oscillator signal are processed by the circuit to generate a loop-filtered error signal to input to the VCO. Output of the VCO at fdrives the sideband generator and forms the microwave-frequency output signal. The resultant frequency division results in reduced phase noise on the microwave-frequency signal.