A method and a device for assembly of a nanomaterial structure
The present invention relates to a method and device capable to form a nanomaterial structure on a receiver by transfer of nanomaterial from a donor film. In some embodiment, the transfer can be provided by laser induced forward transfer, more preferably by blister based laser induced forward transfer. The method further comprises a simultaneous scanning of the donor film or the receiver so that, a computer driven means for moving the receiver and/or the donor film (can form high precision nanomaterial structure. In a preferred embodiment, the simultaneous scanning can be provided by an imaging laser generating high harmonic waves which are detected by a detector. In yet another embodiment, the receiver and/or donor film can be further scanned by a broadband light source(s). In a preferred embodiment, imaging laser and/or light source(s) are emitting polarized light to determine orientation of the nanoparticle deposited on the receiver and forming the nanomaterial structure.
Espacenet — Document number: LU102294B1
N. Goodfriend, Ph.D., Prof. Alexander V. Bulgakov, Dr. Sc.
Laser system in an unstable optical resonator arrangement providing a shaped output beam intensity profile and the method of forming it
The invention is a laser system and a method of generating a defined spatially shaped laser beam in an unstable laser resonator. The laser system for shaping the laser beam mode (7) in an unstable laser resonator comprises an active medium (3) of an excitation region (4), where the gain distribution is generated by the spatial intensity profile of the optical excitation beam (7). The transverse dimension of the beam (7) is smaller than the corresponding dimension of the active laser medium (3). Preferably, the system can also comprise a terminal excitation to introduce a spatially shaped optical excitation beam (6) into the active medium (3), and / or an active or passive element for modifying losses in the resonator, and / or a means of output binding of laser beam from the unstable resonator. The system of the invention can generate a homogeneous beam profile.
Vestnik nr. 37/2019 — Document number: 307955, PCT/CZ2019/050020
Joachim Hein, Jörg Körner , Antonio Lucianetti, Dr., Ing. Tomáš Mocek, Ph.D.
A method of obtaining a regular periodic structure and a device for producing thereof
The invention describes a method and a device for preparing a highly regular periodic structure using pulse laser irradiation on the surface of metal materials. The method of direct formation of highly regular structures on metal materials is ensured by Surface Electromagnetic Wave (SEW) activation that interferes with incident laser waves on the surface of the metal materials in a way that ensures high quality and regularity of the sample.
Document number: 307361, EP17746371
I. Gnilitskyi, L. Orazi, Thibault Derrien, Ph.D., Prof. Dr. Sci. Nadezhda M. Bulgakova, Ph.D., T. Mocek
Optical beam wave front aberration correction method
Document number: 308643
Ing. Jan Pilař, Ph.D. , S. Hutchinson , Antonio Lucianetti, Dr. , Ing. Tomáš Mocek, Ph.D.
A method and a device for heat removal from a flat NIR-MIR laser mirror
The present invention pertains a method and a device for heat removal from optical elements. A method and corresponding device comprises the steps / means for of: attaching the mirror (2) to a heat sink (1) via epoxy layer; and providing a cooling medium flowing through a microchannel provided in the heat sink (1).
European Patent Office — Document number: LU101456B1
A. Reza, Ing. Jan Cvrček, Ing. Martin Smrž, Ph.D.
A clamping system for nonlinear optical elements controlled by an electric field
The clamping system for nonlinear optical elements (1) controlled by an electric field in the version for the Pockels cell is formed by a bottom and top cooler (5) provided with a cooling channel (7) and a supply of cooling medium (9) for discharging heat from the assembly, wherein these coolers (5) are, along with the electrodes (2), controllably pressed against the optical element (1) with a resilient element (10) with an adjustable bias (13) and, simultaneously, these connecting elements (12) are separated by insulating elements (11) and voltage supplies (3) are separated by the insulating covers (4) from the other components, in particular the adapter (14), which allows the assembly to be incorporated into another system.
Vestnik UPV — Document number: 307066
Švandrlík Luděk, Ing. Martin Smrž, Ph.D.
An imaging spectrograph
The imaging spectrograph consists of the first optical system (104), the spectral filter unit, the second optical system (124), and the detector (114). The spectral filter unit comprises of at least one optical filter (110) for whose position to both of the optical systems (104, 124) the following applies: / a / where z1 is the distance of the object (102) being imaged from the front focal point of the first optical system (104), z1´ is the distance of the filter (110) from the image focal point from the first optical system (104), f1, or possibly f1´, is the subject, or possibly, the image focal distance of the first optical system (104), z2 is the distance of the filter (110) from the object focal point of the second optical system (124), z2´ is the distance of the detection area of the detector (114) from the image focal point of the second optical system (124) and f2, or possibly, f2´, is the object, or possibly, the image, focal distance of the second optical system (124).
Document number: CZ 307 000 B6
Mgr. Petr Straka, Ph.D., Ing. Martin Divoký, Ph.D.
Device for one-step measuring a parameter of the laser beam quality M2
Document number: 305256
Ing. Tomáš Mocek, Ph.D.
Dispersion scope
In the present invention, there is disclosed a dispersion scope consisting of an output unit (80), a modulator (30) and a simulation unit (740) with a simulation sensor (70) having its output connected to both the output unit (80) and a simulation unit (740) calculation unit (64). The modulator (30) comprises a set (31) of at least three modulation filters (311, 312, 313), which are modulators of a first-degree dispersion of radiation components, and the simulation sensor (70) is the sensor of the first-degree dispersion of radiation components. The calculation unit (64) comprises a set (72) of at least three digital sub modulators (721, 722, and 723) and the simulation sensor (70) is connected to each of the three of these digital sub modulators (721, 722, and 723). The calculation unit (64) can be connected to a modulation sensor (320) connected to each of the three of these digital sub modulators (721, 722, 723), too.
Document number: 304373
P. Straka, Ing. Martin Smrž, Ph.D.
Dispersion modulation unit
In the present invention, there is disclosed a dispersion modulation unit consisting of a modulator (30) comprising at least one modulation filter (311), a modulation sensor (32), a modulation meter (320) and an output unit (80) connected by a signal line to said modulation sensor (32). The modulation filter (311) comprises as a first-degree dispersion modulator of the radiation components a modulated first-degree dispersion space (371) of solid or gaseous material. The modulated first-degree dispersion space (371) consisting of one or more dispersion subspaces (371a, 371b, 371c) has an input boundary (331) and an output boundary (341) connected by at least one dispersion curve (12) with a beam passing thereon. The modulator (30) is a modulator of the dispersion curve length (12) within the dispersion space (371). The modulation meter (320) is connected to both the input boundary (331) and output boundary (341) of the dispersion space (371). A modulation characteristic source (50) can be inserted between the modulation meter (320) and the output unit (80).
Vestnik UPV — Document number: 304375
P. Straka , Ing. Martin Smrž, Ph.D.
Optical elements for constructing power laser systems and their preparation
In the present invention, there is disclosed a pair of active optical elements (D1 a D2), where both the elements (D1 a D2) exhibit a concentration gradient (4) of optically active centers above acceptable extent of optical homogeneity, are mirror-like and/or rotary symmetrical in shape and at the same time through distribution of the concentration gradient (4) of the optically active centers at least in a plane and/or volume intended for the reflection and/or passage of an optical beam (5). The preparation of the above-indicated pair of active optical elements is characterized in that, there is used a starting material, which comprises at least one area of the mirror-like and/or rotary symmetrical concentration gradient (4) of the optically active centers along at least one axis (2). At the same time, along that axis, the change in the concentration gradient (4) of the optically active centers takes place. The preparation process of the above-indicated pair of active optical elements is further characterized in that the starting material is cut short in the direction of the axis (2) of symmetry and provided with inspection faces. Within the volume of such modified material, there are selected two mirror-like and/or rotary symmetrical sections, which exhibit the optical homogeneity. Further, making at least three cuts (3) being parallel to each other and taken in the direction parallel to the axis (2) of symmetry, there are performed at least two geometric configurations, whereby the central cut represents a geometrical locus of the mirror-like and/or rotary symmetry. A composite optical material is formed by at least one pair of active optical elements, whereby the individual elements (D1 a D2) of the pair are angularly displaced by 180 degrees to each other along a common axis being perpendicular to the gradient (4) direction.
Bulletin 2020/08 — Document number: 16757814.5
Koselja Michal
Optical element, especially laser slab and process for preparing thereof
The present invention relates to an optical element, especially a laser slab for generation of laser emission with suppression of the amplified spontaneous emission (ASE), wherein the optical element consists of a monocrystalline core and an optical ceramic coating without apparent optical interface on the connecting surfaces of the core and the coating. The ceramic coating is created directly on the monocrystalline core without the use of connection techniques. The single crystal is made of high-temperature oxides with garnet structure (YAG, LuAG, YSG, GGG) with a suitable dopant and the ceramic coating is of a corresponding type of a base material being doped with the same and/or different type of a doping ion. Process for preparing such a laser slab consists in a selection of a single crystal homogeneous section, from which a core body is produced. The core body is then put into a compacted layer of a powder precursor of the surface ceramic layer. Subsequently, isostatic pressing by pressure in the range of 50 to 200 MPa is carried out. The blank is then vacuum sintered at the rate of temperature onset in an amount of 400 degC/hour for a period of 6 hours at a temperature in the range of 1600 to 1750 degC. The sintering is followed up with cooling down at the same rate and mechanical severing of the sintered body to slabs, which are treated by grinding and polishing to a required surface grade.
Vestnik UPV — Document number: 305707
Ing. Martin Divoký, Ph.D., Ing. Tomáš Mocek, Ph.D., Ing. Magdalena Sawicka- Chyla, Ing. Ondřej Slezák, Ph.D., Mgr. Jindřich Houžvička, Ph.D., Ing. Viliam Kmetík, Ph.D., Ing. Michal Košelja, Dr. Antonio Lucianetti
Apparatus for separating at least two co-propagating electromagnetic radiation beams and a polarizer
Vestnik UPV — Document number: 33167
Ing. Ondřej Novák, Ph.D., Ing. Bianka Csanaková
