Výsledky vyhledávání - "Alan C. Gray"

Investigation of PPLN Waveguide Uniformity via Second Harmonic Generation Spectra

Autor: Lewis G. Carpenter, Alan C. Gray, Pete Smith, Sam A. Berry, James C. Gates, Corin B. E. Gawith

Publikováno v: IEEE Photonics Technology Letters. 32:63-66

Experimental data collection methods and a corresponding numerical model are presented to investigate the quality of waveguide fabrication in nonlinear optics. The method utilises white light interferometry and standard image recognition techniques t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d616a87825c2a31f94116cbe1bcafca2
https://doi.org/10.1109/lpt.2019.2957199

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Self-pulsing of Brillouin-Raman distributed feedback fiber lasers

Autor: Rex H. S. Bannerman, Devin H. Smith, Alan C. Gray, James C. Gates, Neil G. R. Broderick, Corin B.E. Gawith, Peter G. R. Smith

Publikováno v: Optica Advanced Photonics Congress 2022.

We report on self-pulsing in distributed-feedback single-frequency Raman fibre lasers. We see a periodic reduction in intra-cavity power associated with each pulse and propose that this self-pulsing arises from parasitic Brilluoin scattering cavity d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bbd5b8b992a543a827d507781f2d695
https://doi.org/10.1364/bgppm.2022.bth3a.5

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Self-pulsing and Four-wave mixing of a Raman-Brillouin distributed feedback fiber laser

Autor: Rex H.S. Bannerman, Devin H.S. Smith, Alan C. Gray, James C. Gates, Neil G. R. Broderick, Corin B.E. Gawith, Peter G.R Smith

Publikováno v: Conference on Lasers and Electro-Optics.

We report on the regular self-pulsing of a 1119 nm Raman DFB laser at the Brillouin Stokes shift of the Raman laser. We also detail four-wave mixing between the pump and Raman.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::313d7d8b905cfe9f003f7629a9fe228c
https://doi.org/10.1364/cleo_at.2022.jth3a.14

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High power 739 nm VECSELs for future Yb

Autor: Jonathan R C, Woods, Hermann, Kahle, Alan C, Gray, Jake, Daykin, Anne C, Tropper, Corin, Gawith, Mircea, Guina, Vasilis, Apostolopoulos

Publikováno v: Applied optics. 60(3)

We present an operational characterization of a vertical-external-cavity surface-emitting laser emitting around 739 nm with over 150 mW in a single fundamental spatial mode. Results show that the laser is capable of oscillating on a single cavity axi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::6532265dcc8ae1c18ba9e178aaa6d2cd
https://pubmed.ncbi.nlm.nih.gov/33690437

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Vertical external-cavity surface-emitting lasers in the 700 to 800 nm region for nonlinear frequency generation

Autor: Corin B. E. Gawith, Alan C. Gray, Jake Daykin, Lewis G. Carpenter, Sam A. Berry, Anne C. Tropper, Mircea Guina, Jonathan Woods, Hermann Kahle, Vasilis Apostolopoulos

Publikováno v: Vertical-Cavity Surface-Emitting Lasers XXV.

There is significant interest in developing laser wavelengths between 700 and 800 nm that may then be frequency doubled to the UV for applications in spectroscopy and atomic physics. We present our most recent results on both a 739 nm AlGaAs/AlGaInP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d4cb84df02583499fd9107e59cab655
https://doi.org/10.1117/12.2578152

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High power 739 nm VECSELs for future Yb+ ion cooling

Autor: Jake Daykin, Mircea Guina, Hermann Kahle, Jonathan Woods, Vasilis Apostolopoulos, Anne C. Tropper, Alan C. Gray, Corin B. E. Gawith

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::564f2a221f73866c6f551e1c66095c66
https://eprints.soton.ac.uk/447002/

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Upconversion detection of 1.25 Gb/s mid-infrared telecommunications using a silicon avalanche photodiode

Autor: Pete Smith, James C. Gates, Alan C. Gray, Lewis G. Carpenter, Sam A. Berry, Corin B. E. Gawith

Publikováno v: Optics express. 28(23)

With an ever-increasing interest in secure and reliable free-space optical communication, upconversion detectors enabled through nonlinear optical processes are an attractive route to transmitting data as a mid-infrared signal. This spectral region i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa6d3b29c89d48d38d41be17871e0610
https://pubmed.ncbi.nlm.nih.gov/33182901

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Zinc-indiffused MgO:PPLN waveguides for blue / UV generation via VECSEL pumping

Autor: Pete Smith, Alan C. Gray, Mircea Guina, Sam A. Berry, Lewis G. Carpenter, Corin B. E. Gawith, Hermann Kahle, Anne C. Tropper, Vasilis Apostolopoulos, Jonathan Woods

We present the design and characterization of a zinc-indiffused periodically poled lithium-niobate ridge waveguide for second-harmonic generation of ∼ 390 n m light from 780 nm. We use a newly developed, broadband near-infrared vertical external-ca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f04c8bb960b8aa625ee87e37282013a
https://eprints.soton.ac.uk/438052/

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Upconversion detection of 1.25 Gb/s Mid-IR telecommunications using a silicon avalanche photodiode

Autor: Pete Smith, Sam A. Berry, Corin B. E. Gawith, Alan C. Gray, Lewis G. Carpenter, James C. Gates

Publikováno v: 14th Pacific Rim Conference on Lasers and Electro-Optics (CLEO PR 2020).

We present our current work investigating telecommunication transmission in the mid-infrared region and detection in the silicon absorption band. We achieve 10-7 bit error rates using commercial lasers in single-pass nonlinear conversion stages using

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0310b26bff24fea73567bc78dccec55b
https://doi.org/10.1364/cleopr.2020.c9b_2

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