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Dr Vesselin Kolev

Position: Postdoctoral Fellow Qualification: Engineer-Physicist, Solid-State Electronics and Optoelectronics (University of Plovdiv, Bulgaria); PhD, Physical Sciences (Australian National University) Address: Laser Physics Centre, RSPhysSE, Australian National University, Canberra, ACT0200 Australia Office: Room J3-19, John Carver Building, 58C Phone: +61 2 6125 0692 Fax: +61 2 6125 0029 Email: vzk111@rsphysse.anu.edu.au

Research Interests and Expertise:

• Diode pumped solid-state (DPSS) lasers, resonator extension techniques, multi-pass cells, lasers with variable resonator length;
• Semiconductor saturable absorber mirrors and their application to passive mode-locking;
• High-power high-gain solid-state amplifiers;
• High-power high-efficiency nonlinear optical frequency conversion systems.

Current Projects and Collaborations:

• Development of a compact solid-state laser source for Resonant Infrared Pulsed Laser Deposition (RIR-PLD) of polymer materials. This is a tunable mid infrared source, utilizing optical parametric amplification in multiple-grating periodically poled nonlinear crystals (PPLN). Collaboration with Fraunhofer Institute of Laser Technology (ILT), Aachen, Germany and Vanderbilt University, Nashville, TN, USA.
• Development of a high-power laser source at 589 nm for "Guide Star" applications. The approach is based entirely on nonlinear frequency conversion (second harmonic generation, optical parametric amplification, and sum frequency generation) using non-critically phase-matched LBO and periodically poled (PPLN, PPSLT) crystals. Collaboration with Fraunhofer Institute of Laser Technology (ILT), Aachen, Germany and our industry partner Electro Optic Systems Pty Ltd , Canberra.
• Improvements and further enhancements of the existing "Long Laser / ILT Amplifier" system - a high-power master-oscillator power amplifier (MOPA) system, consisting of a long-cavity variable repetition rate passively mode-locked Nd:YVO4 laser developed earlier in-house and a high-gain Nd:YVO4 slab amplifier prototype designed and built at Fraunhofer Institute of Laser Technology (ILT), Aachen, Germany. The system is used for Pulsed Laser Deposition of optical films ( CUDOS ), carbon nanoclaster formation, art conservation experiments, and as a pump source for the two above mentioned projects. Continuous collaboration with Fraunhofer ILT, Aachen.

Research area link: High Power Pulsed Laser and Parametric Amplifier/Oscillator;

Selected Publications:

The articles are Copyright © by the respective publishers, and may be downloaded for personal use only. Any other use requires prior permission of the author and the respective publisher.

Samoc, A., Samoc, M., Luther-Davies, B., Kolev, V. Z., Bagien, R. K., Luo, X. and Zha, C. (2006). In situ second harmonic generation in disperse red 1-doped polymer and sol-gel films. Molecular Crystals And Liquid Crystals 446: 123-140. (PDF)

Kolev, V. Z., M. W. Duering, B. Luther-Davies and A. V. Rode (2006). Compact high-power optical source for resonant infrared pulsed laser ablation and deposition of polymer materials. Optics Express 14(25): 12302-12309. (PDF)

Kolev, V. Z., M. W. Duering and B. Luther-Davies (2006). Corrections to refractive index data of stoichiometric lithium tantalate in the 5-6 mu m range . Optics Letters 31(13): 2033-2035. (PDF)

Ruan, Y. L., B. Luther-Davies , W. T. Li, A. Rode, V. Kolev and S. Madden (2005). Large phase shifts in AS(2)S(3) waveguides for all-optical processing devices. Optics Letters 30(19): 2605-2607. (PDF)

Gamaly, E. G., Luther-Davies, B., Kolev, V. Z., Madsen, N. R., Duering, M. and Rode, A. V. (2005). Ablation of metals with picosecond laser pulses: Evidence of long-lived non-equilibrium surface states. Laser And Particle Beams 23(2): 167-176. (PDF)

Gamaly, E. G., Madsen, N. R., Duering, M., Rode, A. V., Kolev, V. Z. and Luther-Davies, B. (2005). Ablation of metals with picosecond laser pulses: Evidence of long-lived nonequilibrium conditions at the surface. Physical Review B 71(17). (PDF)

Luther-Davies, B., Kolev, V. Z., Lederer, M. J., Madsen, N. R., Rode, A. V., Giesekus, J., Du, K. M. and Duering, M. (2004). Table-top 50-W laser system for ultra-fast laser ablation. Applied Physics A-Materials Science and Processing 79(4-6): 1051-1055. (PDF)

Gamaly, E. G. Rode, A. V. Uteza, O. Kolev, V. Luther-Davies, B. Bauer, T. Koch, J. Korte, F. Chichkov, B. N. (2004). Control over a phase state of the laser plume ablated by femtosecond laser: Spatial pulse shaping Journal Of Applied Physics 95(5): 2250-2257 (PDF)

Kolev, V. Z., Lederer, M. J., Luther-Davies, B. and Rode, A. V. (2003). Passive mode locking of a Nd : YVO4 laser with an extra-long optical resonator. Optics Letters 28(14): 1275-1277. (PDF)

Lederer, M. J., Hildebrandt, M., Kolev, V. Z., Luther-Davies, B., Taylor, B., Dawes, J., Dekker, P., Piper, J., Tan, H. H. and Jagadish, C. (2002). Passive mode locking of a self-frequency-doubling Yb : YAl3(BO3)(4) laser. Optics Letters 27(6): 436-438. (PDF)

Carmody, C., Boudinov, H., Tan, H. H., Jagadish, C., Lederer, M. J., Kolev, V., Luther-Davies, B., Dao, L. V. and Gal, M. (2002). Ultrafast trapping times in ion implanted InP. Journal Of Applied Physics 92(5): 2420-2423. (PDF)

Lederer, M. J., Kolev, V., Luther-Davies, B., Tan, H. H. and Jagadish, C. (2001). Ion-implanted InGaAs single quantum well semiconductor saturable absorber mirrors for passive mode-locking. Journal Of Physics D-Applied Physics 34(16): 2455-2464. (PDF)