John-Mark Hopkins | Researchain

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Featured researches published by John-Mark Hopkins.

quantum electronics and laser science conference | 2009

Relaxation-oscillation-free continuous-wave optical parametric oscillator pumped internal to a semiconductor Disk Laser

David J. M. Stothard; John-Mark Hopkins; David Burns; Malcolm H. Dunn

We describe a continuous-wave optical parametric oscillator operated within a semiconductor disk laser, free of relaxation oscillations associated with neodymium-based systems. Parametric threshold occurred at 1.4W primary (diode) pump power and 8.5W yielded 205mW idler.

Lasers, Sources and Related Photonic Devices (2010), paper AWB3 | 2010

Intracavity Synthetic Diamond: Underpinning Wavelength Diversity in Semiconductor Disk Lasers

Alan J. Kemp; Alexander J. Maclean; John-Mark Hopkins; Jennifer E. Hastie; S. Calvez; Martin D. Dawson; David Burns

Semiconductor disk lasers are diode-pumped solid-state lasers offering broad spectral coverage. An approach to thermal management that is similarly adaptable is thus required: finite element analysis shows that intracavity diamond heatspreaders are such an approach.

Advanced Solid-State Photonics (2005), paper MB34 | 2005

Heatspreader-Based Thermal Management in VECSELs: Thermal Lensing in Microchip Devices

Alan J. Kemp; Jennifer E. Hastie; S.A. Smith; John-Mark Hopkins; S. Calvez; G.J. Valentine; Martin D. Dawson; David Burns

Finite-element analysis is used to explore the practicalities and scaling potential of heatspreaders in vertical-external-cavity surface-emitting lasers. Thermal lensing and its implications for quasi-monolithic microchip geometries are emphasised.

Advanced Solid State Lasers (2015), paper ATh2A.20 | 2015

Tm:YAP Pumped Intracavity Pulsed OPO Based on Orientation-Patterned Gallium Arsenide (OP-GaAs)

Daniel Kane; John-Mark Hopkins; Malcolm H. Dunn; Peter G. Schunemann; David J. M. Stothard

Lasers, Sources and Related Photonic Devices (2010), paper ATuA15 | 2010

Intracavity Semiconductor Disk Laser Pumped Continuous-wave, Singly-Resonant Mid-IR Optical Parametric Oscillator

John-Mark Hopkins; David J. M. Stothard; Malcolm H. Dunn; David Burns

Lasers, Sources and Related Photonic Devices (2010), paper ATuA14 | 2010

20W, Quasi-cw GaSb-Based Semiconductor Disk Laser

Nils Hempler; John-Mark Hopkins; Alan J. Kemp; Benno Rösener; Marcel Rattunde; Joachim Wagner; David Burns

The Industrial Laser Users | 2007

Semiconductor disk lasers: the future's bright; the colour's flexible

Alan J. Kemp; Jennifer E. Hastie; John-Mark Hopkins; S. Calvez; Martin D. Dawson; David Burns; T. Holt

8th International Conference on Mid-Infrared Optoelectronics: Materials and Devices | 2007

High performance, GaSb-based, optically-pumped semiconductor disk lasers (invited)

John-Mark Hopkins; Nils Hempler; Alexander J. Maclean; Alan J. Kemp; Dawson; Erling Riis; N. Schulz; Marcel Rattunde; A.C.S. Manzor; K. Köhler; J. Wagner; David Burns

Photon 06 | 2006

High performance 2.2um optically-pumped vertical external cavity surface emitting laser

John-Mark Hopkins; Alexander J. Maclean; David Burns; J.S. Ng; M. Hopkinson; S. Calvez; H.D. Sun

Information Processing Letters | 2005

Polarisation and modal characteristics of a 1.3μm diamond-microchip GaInNAs vertical external-cavity surface-emitting laser

Stephen F. Smith; S. Calvez; John-Mark Hopkins; Jennifer E. Hastie; Andreas J. Kemp; David Burns; Martin D. Dawson; T. Jouthti; Jaakko Kontinnen; M. Pessa

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