A5090538292- Laser-Matter Interactions and Applications
- Advanced Fiber Laser Technologies
- Laser Design and Applications
- Solid State Laser Technologies
- Laser Material Processing Techniques
- Laser-Plasma Interactions and Diagnostics
- Photorefractive and Nonlinear Optics
- Optical Polarization and Ellipsometry
- Terahertz technology and applications
- Laser-induced spectroscopy and plasma
- Engineering Technology and Methodologies
- Photoacoustic and Ultrasonic Imaging
- Advanced Optical Imaging Technologies
- Optical Wireless Communication Technologies
- Advanced Electron Microscopy Techniques and Applications
- Optical Coherence Tomography Applications
- Advanced X-ray Imaging Techniques
- Spectroscopy and Laser Applications
- Industrial Engineering and Technologies
- Thermography and Photoacoustic Techniques
- Nonlinear Optical Materials Studies
- Particle Accelerators and Free-Electron Lasers
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Optical and Acousto-Optic Technologies
Institute of Applied Physics
2016-2024
Institute of Laser Physics
2024
A.M. Obukhov Institute of Atmospheric Physics
2019
West Park Hospital
2009
Hannah Research Foundation
2009
Abstract A concept of the front-end system XCELS (eXawatt Center for Extreme Light Studies) facility is presented. Its design aimed at achieving high stability laser radiation parameters and possibility their control in a wide range. Optically synchronised chirped signal (wavelength 910 nm, bandwidth more than 100 duration ∼3 ns) pump 1054 ∼1 ∼4 pulses parametric amplifiers will be implemented output system. Chirped femtosecond with energies above mJ [no 15 fs long after compression,...
A new front-end laser system with optical synchronization of chirped femtosecond and pump pulses for the petawatt complex PEtawatt pARametric Laser (PEARL) has been developed. The provides a broader pulse spectrum, temporal shaping pulse, significant increase in stability parametric amplification stages PEARL.
A method for highly efficient fourth harmonic generation (FHG) retaining spatiotemporal intensity distribution of broadband chirped laser pulses is proposed. It based on the use with linear frequency chirps equal absolute magnitudes and opposite signs at oo-e type noncollinear second generation. Fourth can by obtained classical method, since pulse narrowband spectrally limited. possibility to retain three-dimensional (3D) structure field FHG a conversion efficiency <mml:math...
Collinear and noncollinear sum-frequency generation of broadband laser pulses with angular frequency chirp is considered. The conditions minimal distortions 3D ellipsoidal intensity distribution triangular chirped femtosecond during the second, third, fourth harmonics a Ti-Sa in LBO, BBO, KBBF crystals are found using numerical methods. efficiency conversion from fundamental to harmonic (45%) higher than third (20%), less.
A method for shaping periodic intensity distributions of strongly chirped picosecond laser pulses in the infrared range by phase modulation spectrum is proposed. The dependence time period and depth on parameters analyzed analytical numerical methods. It demonstrated that distribution structure obtained at second- fourth-harmonic generation can be retained introducing an angular chirp. electron bunch dynamics photoinjector test facility DESY Zeuthen (PITZ) was modeled numerically using...
Highly efficient fourth-harmonic generation of 60 µJ, 25 ps chirped (compressible down to 340 fs FWHM) Yb:KGW laser pulses was demonstrated experimentally utilizing noncollinear opposite chirp frequency mixing in Type I beta-barium borate (BBO) and lithium triborate (LBO) crystals as second-harmonic generators followed by collinear doubling another BBO crystal a generator. Second-harmonic spectral narrowing factor over 100 output UV pulse energy 10 µJ were achieved.
A compact optical layout of a pulse shaper for strongly chirped laser pulses nanosecond time scale exploiting tilted volume Bragg grating and programmable spatial light modulator is proposed. The setup has non-zero frequency dispersion; thus it may be used stretching or compressing the controlling its shape simultaneously. feasibility spectral shaping with resolution 0.16 nm, corresponding to 150 ps, contrast ratio 102 demonstrated experimentally.
The features of noncollinear second harmonic generation during the interaction broadband laser pulses with opposite frequency chirps are considered. impact spectral phase mismatch interacting on spectrum width and efficiency conversion to is analyzed an example lithium triborate beta-barium borate crystals.
Abstract Today the electron beam emittance minimization race seems to slack due insufficiency of shaping techniques. To fill gap we propose a method for sharp 3D ellipsoidal boundary laser pulses used in photoinjector. avoid distortions profiled beam, only black analog masks are exploited as elements. A highly promising experimental distribution with thickness better than 10% was obtained at fundamental harmonic. The proposed scheme can be easily modified multiplied harmonics radiation.
The methods of shaping picosecond laser pulses with periodic intensity modulation tunable in frequency and depth are considered. Schemes for modulated "in-line" one output port proposed. A the time envelope IR using a polarization interferometer is demonstrated experimentally. Shaping UV range shown by numerical modeling. possibility to control fourth harmonic under combined impact material dispersion nonlinear conversion classical collinear scheme generation without distortion 3D pulse...
It is shown that a KDP crystal can be used for temporal compression of powerful pulses the near-IR range. A method searching laser beam and parameters suitable proposed. Temporal at central wavelength 1034 nm from 266 fs to 94 during propagation along optical axis in 21 cm thick demonstrated experimentally.
Modern linacs are considered for generation of THz pulses with up to mJ energies at high repetition rates due the capabilities modern photo injectors. A Self-Amplified Spontaneous Emission (SASE) FEL is proposed such a powerful THZ source [1]. In order improve Carrier-Envelope-Phase (CEP) stability SASE seeding option using temporally modulated electron bunches from injector under study. One methods generate beams sub-picosecond structure. linac based FELs (like European XFEL DESY and LCLS...
A possibility of an implementation Mach-Zehnder and Michelson interferometers for formation laser pulses with periodic intensity modulation is considered analytically.