LOMBARD Laurent

19, rue Bobillot, 75 013 Paris, France +33 6 64 82 54 05, [email protected] 27 yo, Single, French Citizen

PhD. in Physics – Engineer PhD in optics, THALES Research & Technology, Laser source team. Graduated from “Ecole Supérieure d’Optique” (French Optics Engineering School) Specialized in: high power fiber lasers, nonlinear optics beam reshaping (dynamic holography, phase conjugation)

Education 2001 – 2005

PhD in optics, THALES Research & Technology (French private company research labs), Orsay, France. Laser source team in collaboration with “Institut d’Optique”, Paris XI University. « High power multimode fiber amplifier. Wavefront reshaping for high beam quality recovery ».

1998 – 2001

Ecole Supérieure d’Optique, Orsay, France Theoretical optics (physical & quantum optics, nonlinear optics, lasers,…), applied optics (electro-optics, image processing,…), other topics (electronics, signal processing, management,…), prevalent practical work

1996 – 1998

Preparation for the competitive entrance examinations to French engineering schools 2 years study of general physics and mathematics

1996

“Baccalaureat S” diploma (Maths and Physics) with honors: French equivalent to the Higher School Leaving Certificate (A. Level)

Experience 2001 – 2005

Thales R&T : research work, in collaboration with Institut d’Optique (supervisors A. Brignon, JP Huignard, P. Georges, G. Pauliat, G. Roosen). Realization of a high power multimode fiber amplifier. Challenging technical problems: coupling and guiding high power pump light (300W diode laser). Study and realization of two reshaping systems: – “Self-Referencing Beam Cleanup”: proposal, patent filing and experimental realization in a photorefractive crystal. – Stimulated Brillouin Scattering induced phase conjugation or beam cleanup in a multimode fiber: theoretical, numerical and experimental analysis. “Self-aligned Beam Cleanup Brillouin Cavity” (proposal, patent filing and experimental realization).

2003 – 2004

Ecole Supérieure d’Optique : first-year students instruction. Supervision of practical works and exams (total time 100h)

2001

Coherent, R&D division (Santa Clara, California). Design and experimental realization of a tunable OPSL (External Cavity Optically Pumped Semiconductor Laser). Tunable cavity simulations. (6 months)

2000

University of Toronto, A. Steinberg team. Design, experimental realization and characterization of an external cavity laser diode. (3 months)

1999

Institut de Physique et de Chimie de Strasbourg, France. Temporal and spectral characterization of femtosecond pulses. (1 month)

Knowledge Experimental knowledge

Theoretical knowledge

– High power fiber systems in continuous wave, pulsed and quasi-continuous wave operation. Double clad fibers, fiber end polishing, fiber cooling. – Photorefractive crystals (Beam cleanup and phase conjugation). “Self-Referencing Beam Cleanup” patented scheme. Computing method for phase detection and feedback. M² evaluation (laser spot quality). – Multimode fibers as phase conjugating mirrors. Graded index and step index fibers. Fiber cleaving. – External and tunable laser cavities. Optically Pumped Semiconductor Lasers Linear, nonlinear and quantum optics, signal processing, electronics. Specifically studied topics: lasers, nonlinear optics, phase conjugation, image processing, semiconductors.

Numerical simulations

Gain simulations in fibers. Formalism and simulations of nonlinear effects in waveguides with propagation modes considerations (Stimulated Brillouin Scattering in waveguides for phase conjugation). Formalism and simulations of cavities with etalon. Optical systems simulations.

Computer science

Excellent grasp of the following computer tools: Maple, Mathematica (symbolic calculus), Matlab (numerical calculus and simulations), LabView (experiments interface and control), OSLO (optical design). Very good programming skills. Languages: Pascal, C, C++, Fortran and Caml

Other knowledge

Account management, Project management.

Languages

French, English (fluent), German (high school level)

Scientific publications Oral conferences with proceedings publication Oral conferences without proceedings publication International publications

Ninth Int. Conf. on Photorefractive Effects, Materials, and Devices, Nice (June 2003), Photonics West, San Jose, California (Jan. 2004), JNOG, Paris, France (Oct. 2004), invited paper, JSO, Chatillon, France (June 2005), invited paper. CLEO Europe 2003, Munich, Germany (June 2003), CLEO US 2003, Baltimore, Maryland (June 2003), CLEO US 2004, San Francisco, California (June 2004), Security and Defense 2004, London, UK (Oct. 2004). “Diode-pumped Yb-doped large-core fiber amplifier with a multimode-to-singlemode photorefractive converter”, L. Lombard, A. Brignon, J.P. Huignard, E. Lallier, G. Lucas-Leclin, P. Georges, G. Pauliat, G. Roosen, OSA Trends in Optics and Photonics Series, Vol. 87, "Photorefractive Effects, Materials and Devices", pp. 547-550, 2003. “Diffraction-limited polarized emission from a multimode ytterbium fiber amplifier after a nonlinear beam converter”, L. Lombard, A. Brignon, J. P. Huignard, E. Lallier, G. Lucas-Leclin, P. Georges, G. Pauliat, G. Roosen, Optics Letters, May 2004 “Diffraction limited polarized emission from a multimode Yb fiber amplifier after nonlinear beam cleanup”, L. Lombard , A. Brignon, J.P. Huignard, E. Lallier, G. Lucas-Leclin, P. Georges, G. Pauliat, G. Roosen, Proceedings SPIE Vol 5335, p. 39-45, Fiber Lasers: Technology, Systems, and Applications; L. N. Durvasula; Ed. “Beam cleanup in a self-aligned gradient index Brillouin cavity for high power multimode fiber amplifier”, L. Lombard, A. Brignon, J. P. Huignard, P. Georges, E. Lallier, Optics Letters, to be published

Other publications

Patents

POLOQ autumn 2004, pp. 45-55, DGA (French Defense Procurement Agency). COLOQ 8, Toulouse, France (Sept. 2003), COLOQ 9, Dijon, France (Sept. 2005) Patent pending number 0311730 (Oct.. 2003), Patent pending number 0509093 (June. 2005).

Personal data Driver’s license Hobbies : photography, mountain hiking, rollerblading, skiing

Contacts Ph.D. supervisors (2001-2005): A. Brignon ([email protected]), P. Georges ([email protected]), J.P. Huignard ([email protected]); Coherent internship supervisor (2001): J. Chilla ([email protected])