Imperial College London

Dr Robbie Murray

Faculty of Natural SciencesDepartment of Physics

Lecturer in Photonics
 
 
 
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Contact

 

+44 (0)20 7594 9672robert.murray10

 
 
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Location

 

636CBlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

49 results found

Runcorn T, Murray RT, Taylor JR, 2017, Microjoule Nanosecond 560 nm Source by SHG of a Combined Yb-Raman Fiber Amplifier, Pages: ATu1A-7

Conference paper

Murray RT, Runcorn TH, Kelleher EJR, Taylor JRet al., 2016, Watt-level Nanosecond 589 nm Source by SHG of a Cascaded Raman Amplifier, Advanced Solid State Lasers 2016

Conference paper

Murray RT, Runcorn TH, Kelleher EJR, Guha S, Taylor JRet al., 2016, Mid-Infrared Difference Frequency-Generation with Synchronized Fiber Lasers, Advanced Solid State Lasers

Conference paper

Woodward RI, Murray RT, Phelan CF, de Oliveira REP, Li S, Eda G, de Matos CJSet al., 2016, Characterization of the nonlinear susceptibility of monolayer MoS2 using second- and third-harmonic generation microscopy, CLEO:2016 Laser Science to Photonic Applications, Publisher: OSA, Pages: STu1R.3-STu1R.3

Second- and third-harmonic generation microscopy of monolayer MoS2 is reported for imaging and characterization of the material's nonlinearity. A telecommunication wavelength pump is used, revealing the material's promise for use in nonlinear optical devices.

Conference paper

Murray RT, Runcorn TH, Kelleher EJR, Taylor JRet al., 2016, Highly efficient mid-infrared difference-frequency generation using synchronously pulsed fiber lasers, Optics Letters, Vol: 41, Pages: 2446-2449, ISSN: 1539-4794

We report the development of a high average power, picosecond-pulse, mid-infrared source based on difference-frequency generation (DFG) of two synchronous master oscillator power fiber amplifier systems. The generated idler can be tuned over the range 3.28–3.45 μm delivering greater than 3.4 W of average power, with a maximum pump to total DFG power conversion efficiency of 78%. The benefits of a synchronously pumped scheme, compared to CW seeding of DFG sources, are discussed.

Journal article

Woodward RI, Murray RT, Phelan CF, de Oliveira REP, Li S, Eda G, de Matos CJSet al., 2016, Characterization of the Nonlinear Susceptibility of Monolayer MoS<inf>2</inf> using Second- and Third-Harmonic Generation Microscopy

Second- and third-harmonic generation microscopy of monolayer MoS2 is reported for imaging and characterization of the material's nonlinearity. A telecommunication wavelength pump is used, revealing the material's promise for use in nonlinear optical devices.

Conference paper

Murray RT, Runcorn TH, Kelleher EJR, Taylor JRet al., 2016, Multi-Watt-level 3.28-3.45 μm difference frequency generation using synchronous fiber lasers

We report multi-Watt-level average power 3.28-3.45 μm difference frequency generation using two sychronous picosecond master oscillator power fiber amplifiers. Greater than 3.4 W of idler power is generated across the entire spectral tuning range.

Conference paper

Murray RT, Kelleher EJR, Runcorn TH, Taylor JRet al., 2015, Multi-Watt-level 3.28-3.45 um difference frequency generation using synchronous fiber lasers, Mid-Infrared Coherent Sources 2016

Conference paper

Runcorn TH, Murray RT, Kelleher EJR, Popov SV, Taylor JRet al., 2015, Duration-tunable picosecond source at 560 nm with watt-level average power, Optics Letters, Vol: 40, Pages: 3085-3088, ISSN: 0146-9592

A pulse source at 560 nm that is tunable in duration between 50 ps and 2.7 ns with >1  W of average power and near diffraction-limited beam quality is demonstrated. The source is based on efficient (up to 50%) second-harmonic generation in a periodically poled lithium tantalate crystal of a linearly polarized fiber-integrated Raman amplifier operating at 1120 nm. A duration-tunable ytterbium master-oscillator power-fiber amplifier is used to pulse-pump the Raman amplifier, which is seeded by a continuous-wave distributed-feedback laser diode at 1120 nm. The performance of the system using two different master oscillator schemes is compared. A pulse energy of up to 765 nJ is achieved with a conversion efficiency of 25% from the ytterbium fiber pump, demonstrating a compact and turn-key architecture for obtaining high peak-power radiation at 560 nm.

Journal article

Runcorn T, Legg T, murray RT, kelleher EJR, popov SV, taylor JRet al., 2015, Fiber-integrated frequency-doubling of a picosecond Raman laser to 560 nm, Optics Express, Vol: 23, Pages: 15728-15733, ISSN: 1094-4087

We report the development of a fiber-integrated picosecond source at 560 nm by second harmonic generation of a Raman fiber laser. A picosecond ytterbium master oscillator power fiber amplifier is used to pulse-pump a Raman amplifier, which is seeded by a continuous wave distributed feedback laser diode operating at 1120 nm. The pulse train generated at 1120 nm is frequency-doubled in a fiber-coupled periodically-poled lithium niobate crystal module, producing 450 mW of average power at 560 nm with a pulse duration of 150 ps at a repetition rate of 47.5 MHz. The near diffraction-limited (M2 = 1.02) collimated output beam is ideal for super-resolution microscopy applications.

Journal article

Runcorn TH, Murray RT, Kelleher EJR, Popov SV, Taylor JRet al., 2015, Watt-level, Duration-tunable Picosecond Source at 560 nm by Second-harmonic Generation of a Raman Fiber Laser

Conference paper

Runcorn TH, Murray RT, Kelleher EJR, Popov SV, Taylor JRet al., 2015, Watt-level, duration-tunable picosecond source at 560 nm by second-harmonic generation of a raman fiber laser

Conference paper

Legg T, Robertson A, Eckardt R, Runcorn T, Hu D, Murray R, Kelleher E, Popov S, Taylor Jet al., 2015, Fiber-Integrated Second Harmonic Generation Modules for Visible and Near-Visible Picosecond Pulse Generation, Conference on Nonlinear Frequency Generation and Conversion - Materials, Devices, and Applications XIV, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X

Conference paper

Hu DJJ, Murray RT, Legg T, Runcorn TH, Zhang M, Woodward RI, Lim JL, Wang Y, Luan F, Gu B, Shum PP, Kelleher EJR, Popov SV, Taylor JRet al., 2014, Fiber-integrated 780 nm source for visible parametric generation, OPTICS EXPRESS, Vol: 22, Pages: 29726-+, ISSN: 1094-4087

Journal article

Runcorn TH, Murray RT, Kelleher EJR, Popov SV, Taylor JRet al., 2014, Watt-level, duration-tunable picosecond source at 560 nm by second-harmonic generation of a raman fiber laser

Conference paper

Murray RT, Kelleher EJR, Popov SV, Mussot A, Kudlinski A, Taylor JRet al., 2013, Widely tunable polarization maintaining photonic crystal fiber based parametric wavelength conversion, OPTICS EXPRESS, Vol: 21, Pages: 15826-15833, ISSN: 1094-4087

Journal article

Kudlinski A, Bendahmane A, Labat D, Virally S, Murray RT, Kelleher EJR, Mussot Aet al., 2013, Simultaneous scalar and cross-phase modulation instabilities in highly birefringent photonic crystal fiber, OPTICS EXPRESS, Vol: 21, Pages: 8437-8443, ISSN: 1094-4087

Journal article

Murray RT, Kelleher EJR, Popov SV, Mussot A, Kudlinski A, Taylor JRet al., 2013, Compact and broadly tunable near-visible parametric wavelength converter based on polarization-maintaining photonic-crystal fiber, Conference on Lasers and Electro-Optics (CLEO), Publisher: IEEE, ISSN: 2160-9020

Conference paper

Murray RT, Kelleher EJR, Popov SV, Mussot A, Kudlinski A, Taylor JRet al., 2012, Synchronously pumped photonic crystal fiber-based optical parametric oscillator, OPTICS LETTERS, Vol: 37, Pages: 3156-3158, ISSN: 0146-9592

Journal article

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