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
to

362 results found

Lumb MP, Farrell DJ, Clarke EM, Damzen MJ, Murray Ret al., 2009, Post-growth tailoring of quantum-dot saturable absorber mirrors by chemical etching, APPLIED PHYSICS B-LASERS AND OPTICS, Vol: 94, Pages: 393-398, ISSN: 0946-2171

Journal article

Chard SP, Damzen MJ, 2009, Compact architecture for power scaling bounce geometry lasers, OPTICS EXPRESS, Vol: 17, Pages: 2218-2223, ISSN: 1094-4087

Journal article

Chard SP, Damzen MJ, 2009, High power, versatile pulse rate control of bounce laser systems

Conference paper

Shardlow PC, Damzen MJ, 2009, Parasitic control of unidirectionality of ring laser resonators

Conference paper

Shardlow PC, Damzen MJ, 2009, High efficiency 17W single frequency ring laser with feedback mirror

Conference paper

Shardlow PC, Damzen MJ, 2009, Self-organised coherent beam combination of self-adaptive solid-state lasers

Conference paper

Omatsu T, Minassian A, Damzen MJ, 2009, 1.3μm Passive Q-switching of a side-pumped Nd doped Gd<sub>0.6</sub>Y<sub>0.4</sub>VO<sub>4</sub> bounce laser, 8th Pacific Rim Conference on Lasers and Electro-Optics, Publisher: IEEE, Pages: 21-+

Conference paper

Omatsu T, Minassian A, Damzen MJ, 2008, Passive Q-switching of a diode-side-pumped Nd-doped mixed gadolinium yttrium vanadate bounce laser, APPLIED PHYSICS B-LASERS AND OPTICS, Vol: 90, Pages: 445-449, ISSN: 0946-2171

Journal article

Lumb M, Clarke E, Farrell D, Damzen M, Murray Ret al., 2008, Tailoring Quantum Dot Saturable Absorber Mirrors for Ultra-Short Pulse Generation, Symposium on Materials and Devices for Laser Remote Sensing and Optical Communication held at the 2008 MRS Spring Meeting, Publisher: MATERIALS RESEARCH SOC, Pages: 193-+, ISSN: 0272-9172

Conference paper

Damzen MJ, 2007, Method and Apparatus for Coherently Combining Laser Emission, 2033276

Patent

Smith G, Damzen MJ, 2007, Self-Q-switched adaptive laser with quasi-CW diode-pumping

Conference paper

Minassian A, Sauder D, Damzen MJ, Jiang B, Li H, Xu Jet al., 2007, Laser operation of highly doped TGT grown Nd: YAG in a bounce geometry

Conference paper

Omatsu T, Damzen MJ, Minassian A, Kuroda Ket al., 2007, Solid-state lasers with a photorefractive phase-conjugate mirror, Springer Series in Optical Sciences, Vol: 115, Pages: 193-221, ISSN: 0342-4111

The maintenance of high-spatial-quality radiation in laser devices as they are scaled to high powers is important for many practical applications, including laser material processing, remote sensing, and optical pumping. However, it is increasingly difficult to maintain a fundamental TEM00 high-spatial-quality mode, and a key problem in solid-state lasers is due to the onset of thermally induced refractive-index distortions in the laser amplifier. This is caused by the intensive inversion mechanism that heats the laser medium. Similarly, in high-power semiconductor diode lasers, the beam quality is severely degraded since to achieve high power (e.g., multiwatt), the emitters of the device need to be scaled to large dimensions (broad-stripe emitter) or multiple arrays of emitters must be used. The broad-stripe emitter leads to highly multimode operation and the emitter arrays are further degraded since the output radiation is spatially incoherent. © 2007 Springer.

Journal article

Smith G, Shardlow PC, Damzen MJ, 2007, High-power near-diffraction-limited solid-state amplified spontaneous emission laser devices, OPTICS LETTERS, Vol: 32, Pages: 1911-1913, ISSN: 0146-9592

Journal article

Smith G, Damzen MJ, 2007, Quasi-CW diode-pumped self-starting adaptive laser with self-Q-switched output, OPTICS EXPRESS, Vol: 15, Pages: 6458-6463, ISSN: 1094-4087

Journal article

Farrell DJ, Damzen MJ, 2007, High power scaling of a passively modelocked laser oscillator in a bounce geometry, OPTICS EXPRESS, Vol: 15, Pages: 4781-4786, ISSN: 1094-4087

Journal article

Sauder D, Minassian A, Damzen MJ, 2007, Laser operation at 1.3μm of 2at.% doped crystalline Nd:YAG in a bounce geometry, OPTICS EXPRESS, Vol: 15, Pages: 3230-3235, ISSN: 1094-4087

Journal article

Omatsu T, Nawata K, Kuroda K, Minassian A, Damzen MJet al., 2007, High power pico-second output from a diode-pumped nd:YVO<inf>4</inf> phase conjugate laser

We demonstrated a high power pico-second output from a diode pumped Nd:YVO4 slab amplifier with a Rh:BaTiO3 phase conjugate mirror. Over 25W diffraction-limited output was obtained. This system could also produce MW ps pulses. © 2007 Optical Society of America.

Conference paper

Omatsu T, Nawata K, Kuroda K, Minassian A, Damzen MJet al., 2007, High power pico-second output from a diode-pumped nd:YVO<inf>4</inf> phase conjugate laser

We demonstrated a high power pico-second output from a diode pumped Nd:YVO4 slab amplifier with a Rh:BaTiO3 phase conjugate mirror. Over 25W diffraction-limited output was obtained. This system could also produce MW ps pulses. © 2007 Optical Society of America.

Conference paper

Sauder D, Minassian A, Damzen MJ, 2007, Laser operation at 1.3 urn of 2at.% doped crystalline Nd: YAG in a bounce geometry and second harmonic generation

Conference paper

Smith G, Damzen MJ, 2007, Self-Q-switched adaptive laser with quasi-CW diode-pumping

Conference paper

Sauder D, Minassian A, Damzen MJ, 2006, High efficiency laser operation of 2 at.% doped crystalline Nd:YAG in a bounce geometry

High-efficiency high-power operation of 2 at.% crystalline Nd:YAG is demonstrated. CW output power of 46.1W and slope efficiency of 60% are obtained, and llmJ pulses at 100Hz with QCW-puraping are achieved with 12ns Q-switched pulses. © 2006 Optical Society of America.

Conference paper

Omatsu T, Minassian A, Damzen MJ, 2006, High repetition rate Q-switching performance in transversely diode-pumped Nd doped mixed gadolinium yttrium vanadate bounce laser

Up to 700kHz high repetition active Q-switching was achieved with a pulse-width of <40ns by using a diode-side-pumped Nd:GdxY 1.xVO4 bounce amplifier. The average output power of 17.5W was obtained at a pump power of 41W. © 2006 Optical Society of America.

Conference paper

Smith G, Minassian A, Damzen MJ, 2006, High power-scaling of self-organising adaptive lasers with gain holography

We present high power-scaled adaptive lasers, based on induced gain gratings using self-intersecting loops, in seeded and self-starting configurations. TEM00 and single longitudinal mode systems are demonstrated. Phase conjugate output powers upto 76W are produced. © 2006 Optical Society of America.

Conference paper

Smith G, Damzen MJ, 2006, Spatially-selective Amplified Spontaneous Emission (ASE) sources derived from a high-gain solid-state amplifier

We present high power amplified spontaneous emission sources with spatial selectivity, based on an ultra-high gain diode-pumped Nd:YVO4 crystal in a bounce amplifier geometry. Output power 30W was achieved with near diffraction-limited spatial quality. © 2006 Optical Society of America.

Conference paper

Omatsu T, Nawata K, Sauder D, Minassian A, Damzen MJet al., 2006, Over 40-watt diffraction-limited Q-switched output from neodymium-doped YAG ceramic bounce amplifiers, OPTICS EXPRESS, Vol: 14, Pages: 8198-8204, ISSN: 1094-4087

Journal article

Amarande SA, Damzen MJ, 2006, Measurement of the thermal lens of grazing-incidence diode-pumped Nd:YVO<sub>4</sub> laser amplifier, OPTICS COMMUNICATIONS, Vol: 265, Pages: 306-313, ISSN: 0030-4018

Journal article

Smith G, Damzen MJ, 2006, Spatially-selective amplified spontaneous emission source derived from an ultrahigh gain solid-state amplifier, OPTICS EXPRESS, Vol: 14, Pages: 3318-3323, ISSN: 1094-4087

Journal article

Omatsu T, Okida M, Minassian A, Damzen MJet al., 2006, High repetition rate Q-switching performance in transversely diode-pumped Nd doped mixed gadolinium yttrium vanadate bounce laser, OPTICS EXPRESS, Vol: 14, Pages: 2727-2734, ISSN: 1094-4087

Journal article

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