Vortrag ILC

Slide1: 

МАКС - 2007 International Laser Center of M.V.Lomonosov Moscow State University Moscow, Russia www.ilc.edu.ru

Outline: 

Outline ILC as a sub-division of MSU Research Education Advanced technologies and products Laser ultrasonic defectoscope Picosecond diode-pumped high-peak-power lasers Retina Diagnostic Instruments

Location: 

Location     Nonlinear Optics Building Physics Department MSU building complex on Lenin Hills

International Laser Center of Moscow State University: 

International Laser Center of Moscow State University International Laser Center was organized in 1989 as a specialized sub-division of Moscow State University in order to: support research and educational activities on laser physics and nonlinear optics within the MSU; coordinate laser based interdisciplinary research on opto-electronics, photo-chemistry, bio-photonics etc in MSU; to promote cooperation of MSU with Russian and foreign research and educational centers

International Laser Center of Moscow State University: 

International Laser Center of Moscow State University Research

Scientific laboratories of ILC MSU: 

Scientific laboratories of ILC MSU Photonics and nonlinear spectroscopy Laser femtotechnologies and ultrastrong light fields Laser optoacoustics Precision spectroscopy of conducting polymers and semiconductors Time-domain spectroscopy and picosecond diode-pumped lasers Femtosecond nanophotonics Laser beam diagnostics and controlled laser systems Adaptive optics laboratory Nonlinear spectroscopy of ultrafast processes in condensed matter Nonlinear optics crystal growth Ultrafast processes in biology Laser and mathematical biophysics and biomedicine Fundamental Research in ILC MSU

Slide7: 

Photonics and nonlinear spectroscopy: photonic-crystal-fibers Applications of photonic-crystal-fiber light source for time-resolved studies of ultrafast population and coherent relaxation dynamics in molecular system using different nonlinear optical processes Microstructured fibers Fundamental Research in ILC MSU

Laser femtotechnologies and ultrastrong light fields: 

Laser femtotechnologies and ultrastrong light fields The Center is equipped with a terawatt femtosecond titanium-sapphire laser system: pulse duration 40 fs; wavelength 800 nm; pulse energy 40 mJ; pulse repetition rate 10 Hz. … and a femtosecond laser system on Cr:forsterite: pulse duration 100 fs; wavelength 1250 nm; pulse energy 1 mJ; pulse repetition rate 50 Hz. Fundamental Research in ILC MSU

Slide9: 

Precise spectroscopy of conducting polymers and semiconductors Assoc. Professor D.Yu.Parashuk Experimental data on Raman scattering in donor-acceptor charge-transfer complexes of conjugated polymers give ability to characterize them as promising photonic and photoelectric materials Fundamental Research in ILC

International Laser Center of Moscow State University: 

International Laser Center of Moscow State University Education

Education in ILC MSU: 

Education in ILC MSU Students’ research (course project and diploma work) Professional retraining and short courses Probation Facilities Education in ILC MSU

Probation: 

Probation Probation at the ILC laboratories lasts from one to ten months in accordance with individual plans Teaching lab "Lasers and Nonlinear Optics" СИРИЕЦ Education in ILC MSU

Teaching Laboratory: 

Teaching Laboratory Optical parametric oscillator Fourier Transform IR spectrometer Lock-in technique in pump-probe spectroscopy Optical harmonics generation Kinetics of solid-state laser Optical modulation Laser beam characterization Holography Microjoule aerosol lidar and aerosol monitoring technique Nonlinear optics and spectroscopy Laser physics Education in ILC MSU

Slide14: 

LabVIEW training courses LabVIEW Basic Course Data acquisition in LabVIEW (National Instruments equipment) LabVIEW Advanced Course Technical vision systems Portable data acquisition systems based on PDA FPGA programming TI DSPs graphical programming Real-time data acquisition systems The Center offers training to pass international certificate exam National Instruments Certified LabVIEW Associate Developer. Education in ILC MSU

Slide15: 

Students of retraining program can choose courses of different complexity: from getting started courses of LabVIEW programming for beginners to advanced courses for high-skilled professionals. The retraining program consists of blocks of courses. Each course is very compact in time (from 20 up to 72 hours). At the end of the course each student presents self-made work on experiment automation. Everyone who passed a test is rewarded with a state certificate of increasing qualification or professional retrainig . Education in ILC MSU

International Laser Center of Moscow State University: 

International Laser Center of Moscow State University Advanced Technologies and Products

LASER ULTRASONIC DEFECTOSCOPEfor nondestructive testingand material evaluationof composites: 

LASER ULTRASONIC DEFECTOSCOPE for nondestructive testing and material evaluation of composites Advanced technologies and products

Laser Ultrasonics. Principles: 

Laser Ultrasonics. Principles DPSS Q-switched laser pulse is absorbed in optoacoustic generator exited wideband probe ultrasonic pulse propagates to a sample under investigation probe pulse is scattered at the sample structures wideband piezotransducer detects backscattered ultrasound waves Backscattered signals deliver the information about the sample, namely, on the acoustic properties of different structures of the sample. Optoacoustic generator sample Advanced technologies and products

Merits of Laser Ultrasonics: 

Merits of Laser Ultrasonics Complete set of elastic modulus Spatial distribution of residual stresses Thickness of coatings, layers, corrosion Evaluation of plastic polymerization Evaluation of water content in composites Evaluation of residual life-time of metal and composite Enhancement of resolution and sensitivity of ultra-sound NDT Measurement of a porosity and micro-damage of composites Evaluation of residual life-time of composite Measurement of material density Evaluation of plastic polymerization Evaluation of distribution of grains over size Evaluation of residual life-time of metal and composite Evaluation of water content in composites Measurement of ultrasonic wave velocity with high precision Measurement of cross-section of ultrasound back-scattering with high spatial resolution Measurement of ultrasonic wave attenuation over wide frequency range Advanced technologies and products

LASER-ULTRASONIC DEFECTOSCOPE UDL-2M: 

LASER-ULTRASONIC DEFECTOSCOPE UDL-2M Probe US pulse Spectral sensitivity of ultrasound detection Advanced technologies and products

Comparison of laser and piezoelectric ultrasonic imageof graphite-epoxy composite: 

Comparison of laser and piezoelectric ultrasonic image of graphite-epoxy composite Laser Ultrasonics Piezoelectric Ultrasonics Front surface Brass foil Layers of composite Advanced technologies and products

Laser ultrasonic defectoscope. Specification: 

Laser ultrasonic defectoscope. Specification Frequency range 0.1- 6 МГц Depth of investigation up to 35 mm for composites up to 65 mm for aluminum Resolution /in depth/ < 0.1 mm for composites < 0.3 mm for metals Lateral resolution 3-4 мм Repetition rate 0.5 – 2 kHz Laser pulse energy 0.1 mJ Laser pulse duration 10 ns Productivity 5 Frames / s Advanced technologies and products

HIGH PEAK-POWER DIODE-PUMPED PICOSECOND LASERS for scientific, technological and navigational applications: 

Advanced technologies and products HIGH PEAK-POWER DIODE-PUMPED PICOSECOND LASERS for scientific, technological and navigational applications

High-peak-power picosecond pulses applications: 

Advanced technologies and products COMPACT AND STABLE PICOSECOND LASERS with 10-30 picosecond duration millijoule level single pulse energy repetition rates: up to 1 kHz TIME-RESOLVED MEASUREMENTS NONLINEAR SPECTROSCOPY MICRO-MACHINING LASER RADARS and NAVIGATIONAL APPLICATIONS High-peak-power picosecond pulses applications

Advantages of diode-pump technique: 

Advanced technologies and products Advantages of diode-pump technique HIGH QUALITY PUMP PROFILE HIGH PUMPE EFFICIENCY EASYE PUMP DELIVERY Fiber coupled design, end-pump geometry Typical pump diode (black) and Nd:YAG absorption (red) spectra Typical pump beam profile on the laser crystal input

Principle of electro-optical generation control: 

Advanced technologies and products Principle of electro-optical generation control

Slide27: 

Space profile of output radiation Picosecond QCW Diode-Pumped Nd:YAG Laser PICAR Advanced technologies and products TECHNICAL SPECIFICATION Wavelength, nm 1064 Max pulse energy, mJ 0.3 Pulse duration (FWHM), ps 25 Maximum repetition rate, Hz 300 Output triggering pulse delay with respect to optical pulse, ns -500…+500 Output triggering pulse jitter, ns < 0.2 Polarization ratio > 100 Energy contrast ratio > 150 Beam diameter at output, mm 1.1 Beam quality, M2 1.2 Optical unit size (W×H×L), mm 225×110×400 Electronic module size (W×H×L), mm 440×90×360 Power consumption, VA <100 SCALING TO Diode pumped amplifier 300 Hz x 2 mJ Flash-lamp amplifier 100 Hz х 10 mJ Flash-lamp amplifier 20 Hz х 70 mJ

Retina Diagnostic Instruments with Adaptive Optics: 

Retina Diagnostic Instruments with Adaptive Optics Advanced technologies and products

Measuring human eyes aberrations: 

Measuring human eyes aberrations The distorted wavefront is sampled by lenslet array and forms regular spot-picture. The deviations of the spot centers from the reference grid are proportional to the local slopes of the wavefront. A low power laser beam is focused by the eye on the retina and creates virtual point source. The scattered laser radiation reflects back and acquires aberrations induced by ocular media, lens and cornea. Schematic picture of a human eye. Lenslet array. Typical view of the Hartmann pattern. Advanced technologies and products

Measuring human eyes aberrations.Wavefront Reconstruction: 

Measuring human eyes aberrations. Wavefront Reconstruction Right eye. Left eye. The wavefront is reconstructed with subsequent Zernike Polynomials approximation. The corresponding coefficients tell about eye aberrations. Result: myopia -1.7; myopia -1.0; astigmatism -0.4 Advanced technologies and products

Slide31: 

Thank you for your attention

Professional retraining: Laser Teaching Laboratory: 

Professional retraining: Laser Teaching Laboratory Classical practicum with laser and nonlinear optics setups, which are used for learning how to plan and carry out an optics or laser experiment. Each practical work is targeted to carry out a real experiment in the specific area. Most of laboratory works are intended both for phenomena demonstration and for in-depth study of physical mechanisms. Teaching laboratory is permanently updated with modern setups. It currently offers 8 practical works. Products and Services

Laser Teaching Laboratory. Optical harmonics generation : 

Laser Teaching Laboratory What do they study? They study the phase matching conditions for SHG, where the fundamental and the second harmonic waves travel inside the crystal at the same velocity. They study the influence of the crystal type, its length, and radiation input power on the efficiency of SHG. Main objective. To study nonlinear optical effect of second harmonic generation (SHG). Optical harmonics generation What are they doing? The students measure the second harmonic power as a function of different parameters, pulse characteristics for fundamental and second harmonic radiation. Laser Teaching Laboratory. Optical harmonics generation

Slide34: 

International Cooperation

International Cooperation: 

ILC MSU is corporate member of LAS, LIA, SPIE, COST P11 of ESF etc. International Cooperation International cooperation ILC MSU is the organizer of the International Conference on Coherent and Nonlinear Optics (ICONO), the International Conference on Laser Applications in Life Sciences (LALS), and the Russian-French (RFLS), Russian-German (RGLS), and Russian-Italian (ITARUS) Laser Symposia. ILC MSU is a partner in the Russian-French Agreement on the European Scientific Cooperation in Laser Physics and Optoelectronics.

International Cooperation: 

ILC MSU has equipped with modern laser, scientific, technological and diagnostic instrumentation International Laser Center at Bratislava, Slovac Republic, and laser laboratories in universities of Oulu and Turku, Finland. International Cooperation International cooperation ILC MSU participates in the International projects whose purpose is to create and equip scientific and educational centers and laboratories aimed at technologically and industrially oriented interdisciplinary research in micro- and nanotechnologies, telecommunication, laser biomedicine, and material diagnostics.

Slide37: 

Since 2005 the laboratory has a status of authorized National Instruments educational Center. State of the art equipment real-time PXI+SCXI computers, automation controller Compact RIO, compact vision system, vibroacoustics system, DSP TI, vision systems (USB, Fireware, analog), HMI computer, PDA based data acquisition system, motion control, mutifunction data asquisition boards, GPIB controllers and full pack of LabVIEW software.. LabVIEW training courses