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The Study of Operational Production Management in Selected Firm
Polívka, Pavel ; Tesař, Rostislav (referee) ; Jurová, Marie (advisor)
This thesis deals with operative production management in a chosen company. In the theoretical part of the study are explained the terms of production, production management, operative production management and production planning. This is followed by a brief description and characteristics of a chosen entrepreneurial subject that deals with production of automatic door systems for rail vehicles. The next part of the thesis is aimed at evaluation of operative production management of door leaves current condition with focus on manufacturing programme, production system and production process organisation. Because of the most severe lack of current condition there is an up-to-date analysis in the field of production planning and material flow in time. Based on this analysis there is a sketch of three theoretical approaches to solutions. In the final part of the thesis a brief evaluation of assets and conditions of solutions realization is carried out and there is a recommendation for production management of the company.
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Frequency stabilized semiconductor laser source for high-resolution interferometry
Řeřucha, Šimon ; Hucl, Václav ; Holá, Miroslava ; Čížek, Martin ; Pham, Minh Tuan ; Pravdová, Lenka ; Lazar, Josef ; Číp, Ondřej
We have assembled an experimental iodine stabilized Distributed Bragg Reflector (DBR) diode based laser system lasing at a wavelength that is in a close proximity to the wavelength of a stabilized He-Ne lasers traditionally used for metrological applications (λ=632.9 nm in vacuum). The aim was to verify whether such a system could be used as an alternative to the He-Ne laser while yielding wider optical frequency tuning range, higher output power and high frequency modulation capability. We have measured the basic characteristics of the laser source and then we have compared the performance of the laser system with that of a traditional frequency stabilized He-Ne laser with a series of experimental arrangements similar to those usually found in laser interferometry and displacement metrology applications. The results indicate that DBR diode laser system provides a good laser source for applications in dimensional (nano)metrology since it provides more output power and advanced tunability options than stabilized He-Ne lasers while maintaining fundamental requirements such as the frequency stability, coherence length and also a defined traceability.\n\n
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The Study of Operational Production Management in Selected Firm
Polívka, Pavel ; Tesař, Rostislav (referee) ; Jurová, Marie (advisor)
This thesis deals with operative production management in a chosen company. In the theoretical part of the study are explained the terms of production, production management, operative production management and production planning. This is followed by a brief description and characteristics of a chosen entrepreneurial subject that deals with production of automatic door systems for rail vehicles. The next part of the thesis is aimed at evaluation of operative production management of door leaves current condition with focus on manufacturing programme, production system and production process organisation. Because of the most severe lack of current condition there is an up-to-date analysis in the field of production planning and material flow in time. Based on this analysis there is a sketch of three theoretical approaches to solutions. In the final part of the thesis a brief evaluation of assets and conditions of solutions realization is carried out and there is a recommendation for production management of the company.
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Frequency stabilization of DBR diode laser working on 633 nm for lenght metrology and spectroscopy
Pham, Minh Tuan ; Hucl, Václav ; Čížek, Martin ; Mikel, Břetislav ; Hrabina, Jan ; Řeřucha, Šimon ; Lazar, Josef ; Číp, Ondřej
Semiconductor lasers are nowadays very convenient and suitable for many applications in field of human activities. Mainly it is thanks to their small size, low cost and high energy efficiency. This work deals with frequency stabilization of DBR diode laser working on 633 nm and the measurements of its noise properties. For this purpose we have chosen DBR diode EYP-DBR-0633 from Eagleyard Photomic. This particular laser diode in temperature range from 6 degrees celsius to 24 degrees Celsius has a tuning range of 0,86 nm, which correspond to change of 650 GHz in optical frequency domain. In this paper we also present methodology and results for frequency noise properties investigation of this laser with unbalanced Mach-Zhender interferometer and 10 m long fibre spool inserted in reference arm.
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