Imperial College London

ProfessorMichaelDamzen

Faculty of Natural SciencesDepartment of Physics

Professor of Experimental Laser Physics
 
 
 
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Contact

 

+44 (0)20 7594 7783m.damzen Website

 
 
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Location

 

610Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
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296 results found

Kerridge-Johns WR, Damzen MJ, 2018, Temperature effects on tunable cw Alexandrite lasers under diode end-pumping, OPTICS EXPRESS, Vol: 26, Pages: 7771-7785, ISSN: 1094-4087

JOURNAL ARTICLE

Parali U, Sheng X, Minassian A, Tawy G, Sathian J, Thomas GM, Damzen MJet al., 2018, Diode-pumped Alexandrite laser with passive SESAM Q-switching and wavelength tunability, OPTICS COMMUNICATIONS, Vol: 410, Pages: 970-976, ISSN: 0030-4018

JOURNAL ARTICLE

Thomas GM, Minassian A, Damzen MJ, 2018, Optical vortex generation from a diode-pumped alexandrite laser, Laser Physics Letters, Vol: 15, ISSN: 1612-2011

© 2018 Astro Ltd. We present the demonstration of an optical vortex mode directly generated from a diode-pumped alexandrite slab laser, operating in the bounce geometry. This is the first demonstration of an optical vortex mode generated from an alexandrite laser or from any other vibronic laser. An output power of 2 W for a vortex mode with a 'topological charge' of 1 was achieved and the laser was made to oscillate with both left- and right-handed vorticity. The laser operated at two distinct wavelengths simultaneously, 755 and 759 nm, due to birefringent filtering in the alexandrite gain medium. The result offers the prospect of broadly wavelength tunable vortex generation directly from a laser.

JOURNAL ARTICLE

Coney AT, Thomas GM, Minassian A, Damzen MJet al., 2017, High-Energy Diode-Pumped Alexandrite Laser Development for Remote Sensing, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Publisher: IEEE

CONFERENCE PAPER

Damzen MJ, Thomas GM, Minassian A, 2017, Diode-side-pumped Alexandrite slab lasers, OPTICS EXPRESS, Vol: 25, Pages: 11622-11636, ISSN: 1094-4087

JOURNAL ARTICLE

Kerridge-Johns WR, Damzen MJ, 2017, Vortex mode generation from coupled anti-resonant ring lasers

© OSA 2017. Vortex modes with controllable handedness were generated by coupling two laser cavities through a common Nd:YVO4 gain medium inside an anti-resonant ring. This design is applicable to both isotropic and anisotropic gain media.

CONFERENCE PAPER

Kerridge-Johns WR, Damzen MJ, 2017, Anti-Resonant Ring Laser Cavities, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Publisher: IEEE

CONFERENCE PAPER

Kerridge-Johns WR, Damzen MJ, 2017, Tunable CW Alexandrite Lasers and Fundamental Limits of Efficiency, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Publisher: IEEE

CONFERENCE PAPER

Parali U, Thomas GM, Minassian A, Sheng X, Damzen MJet al., 2017, Wavelength tunable passively Q-switched Alexandrite laser with direct diode-pumping at 635 nm, 5th International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS), Publisher: SCITEPRESS, Pages: 82-89

We report on a wavelength tunable passively Q-switched Alexandrite laser directly red-diode-pumped at 635 nm. Passive Q-switching was achieved with a semiconductor saturable absorber mirror (SESAM) and wavelength tuning with a birefringent tuner. The pulse repetiton rate was variable on the pump power and wavelength and a maximum 27 kHz rate was achieved in fundamental TEM00 mode. The maximum average output power obtained was 41 mW. The Q-switched wavelength tuning band was studied between 740 nm and 755 nm. To the best of our knowledge, this is the first time that tunable TEM00 passive Q-switched operation of a diode-pumped Alexandrite laser has been achieved. The results obtained in this study can be significantly further optimised for performance. A new cavity configuration for this optimisation is described. Future work is expected to lead to the development of higher power, more efficient tunable passive Q-switched (and potentially passive mode-locked) diode-pumped Alexandrite la (More)

CONFERENCE PAPER

Sheng X, Parali U, Thomas GM, Minassian A, Damzen MJet al., 2017, Passively SESAM Q-switched Red-Diode-Pumped Alexandrite Laser, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Publisher: IEEE

CONFERENCE PAPER

Thomas GM, Minassian A, Kerridge-Johns W, Sheng X, Coney A, Damzen MJet al., 2017, High power and high energy diode-pumped Alexandrite lasers, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Publisher: IEEE

CONFERENCE PAPER

Arbabzadah EA, Damzen MJ, 2016, Fibre-coupled red diode-pumped Alexandrite TEM00 laser with single and double-pass end-pumping, LASER PHYSICS LETTERS, Vol: 13, ISSN: 1612-2011

JOURNAL ARTICLE

Damzen M, Thomas G, Teppitaksak A, Arbabzadah E, Kerridge-Johns W, Minassian Aet al., 2016, Diode-pumped alexandrite laser - A new prospect for remote sensing

© 2015 IEEE. Tunable-wavelength diode-pumped Alexandrite laser operation includes highest power > 26W (end-pumped rod); > 12W (side-pumped slab); and first Q-switched operation with pulse energy ∼ 1mJ at kHz repetition rate, as development for space lidar application.

CONFERENCE PAPER

Kerridge-Johns WR, Damzen MJ, 2016, Analytical model of tunable Alexandrite lasing under diode end-pumping with experimental comparison, JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, Vol: 33, Pages: 2525-2534, ISSN: 0740-3224

JOURNAL ARTICLE

Loiko PA, Arbabzadah EA, Damzen MJ, Mateos X, Dunina EB, Kornienko AA, Yasukevich AS, Skoptsov NA, Yumashev KVet al., 2016, Judd-Ofelt analysis and stimulated-emission cross-sections for highly doped (38 at%) Er:YSGG laser crystal, JOURNAL OF LUMINESCENCE, Vol: 171, Pages: 226-233, ISSN: 0022-2313

JOURNAL ARTICLE

Thomas GM, Minassian A, Sheng X, Damzen MJet al., 2016, Diode-pumped Alexandrite lasers in Q-switched and cavity-dumped Q-switched operation, OPTICS EXPRESS, Vol: 24, Pages: 27212-27224, ISSN: 1094-4087

JOURNAL ARTICLE

Kerridge-Johns WR, Damzen MJ, 2015, Analysis of pump excited state absorption and its impact on laser efficiency, LASER PHYSICS LETTERS, Vol: 12, ISSN: 1612-2011

JOURNAL ARTICLE

Murphy FJ, Arbabzadah EA, Bak AO, Amrania H, Damzen MJ, Phillips CCet al., 2015, Optical chopper Q-switching for flashlamp-pumped Er,Cr:YSGG lasers, Laser Physics Letters, Vol: 12, ISSN: 1612-202X

JOURNAL ARTICLE

Teppitaksak A, Thomas GM, Damzen MJ, 2015, Investigation of a versatile pulsed laser source based on a diode seed and ultra-high gain bounce geometry amplifiers, OPTICS EXPRESS, Vol: 23, Pages: 12328-12336, ISSN: 1094-4087

JOURNAL ARTICLE

Thomas GM, Minassian A, Teppitaksak A, Damzen MJet al., 2015, High energy Q-switching and cavity dumped Q-switching of a diode-pumped alexandrite laser

© OSA 2015. We present 3mJ Q-switched and 0.5mJ cavity dumped Q-switched pulse energies from a diode-pumped Alexandrite laser operating at 758nm. Preliminary results of second harmonic generation to the UV (379nm) with ∼47% conversion efficiency are reported.

CONFERENCE PAPER

Arbabzadah EA, Kerridge-Johns W, Thomas GM, Minassian A, Damzen MJet al., 2014, High efficiency TEM<inf>00</inf> diode end-pumped alexandrite laser

CONFERENCE PAPER

Arbabzadah EA, Kerridge-Johns W, Thomas GM, Minassian A, Damzen MJet al., 2014, High efficiency TEM<inf>00</inf> diode end-pumped alexandrite laser

CONFERENCE PAPER

Arbabzadah EA, Shardlow PC, Minassian A, Damzen MJet al., 2014, Pulse control in a Q-switched Nd:YVO4 bounce geometry laser using a secondary cavity, OPTICS LETTERS, Vol: 39, Pages: 3437-3440, ISSN: 0146-9592

JOURNAL ARTICLE

Teppitaksak A, Minassian A, Thomas GM, Damzen MJet al., 2014, High efficiency > 26 W diode end-pumped Alexandrite laser, OPTICS EXPRESS, Vol: 22, Pages: 16386-16392, ISSN: 1094-4087

JOURNAL ARTICLE

Teppitaksak A, Thomas GM, Damzen MJ, 2014, Gain-switched diode laser seeding of ultra-high-gain Nd: YVO<inf>4</inf> bounce amplifier system as a versatile pulsed laser source

CONFERENCE PAPER

Teppitaksak A, Thomas GM, Damzen MJ, 2014, Gain-switched diode laser seeding of ultra-high-gain Nd: YVO<inf>4</inf> bounce amplifier system as a versatile pulsed laser source

CONFERENCE PAPER

Thomas GM, Minassian A, Damzen MJ, 2014, Directly diode-side-pumped Alexandrite slab lasers in the bounce geometry and optical vortex generation

CONFERENCE PAPER

Thomas GM, Minassian A, Damzen MJ, 2014, Directly diode-side-pumped Alexandrite slab lasers in the bounce geometry and optical vortex generation

CONFERENCE PAPER

Arbabzadah EA, Phillips CC, Damzen MJ, 2013, Free-running and Q-switched operation of a diode pumped Er:YSGG laser at the 3 mu m transition, APPLIED PHYSICS B-LASERS AND OPTICS, Vol: 111, Pages: 333-339, ISSN: 0946-2171

JOURNAL ARTICLE

Arbabzadah EA, Shardlow PC, Damzen MJ, 2013, Laser Pulse Control of a Q-switched Nd:YVO4 Bounce Geometry Laser using a Secondary Cavity, Conference on Lasers and Electro-Optics Europe & International Quantum Electronics Conference (CLEO/Europe-IQEC), Publisher: IEEE

CONFERENCE PAPER

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