National Repository of Grey Literature 91 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
SMV-2023-36: Wuhan Space
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency reference intended for the frequency stabilisation of ultra-compact semiconductor laser sources. This optical reference is based on an absorption cell filled with ultra-pure absorption gases, and it allows precise locking of the lasers with laser spectroscopy methods. The cell will serve as a reference of optical frequencies in systems of laser standards (532-633 nm wavelengths).
SMV-2023-35: NIM Multipass
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency references intended for the frequency stabilisation of ultra-compact laser sources. These optical references are based on absorption cells filled with ultra-pure absorption gases and they allow precise locking of the lasers with the methods of laser spectroscopy. The cells will serve as the references of optical frequencies in systems of laser standards (532 nm wavelengths).
SMV-2023-34: ULM2023
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency reference intended for the frequency stabilisation of ultra-compact semiconductor laser sources. This optical reference is based on an absorption cell filled with ultra-pure absorption gases, and it allows precise locking of the lasers with laser spectroscopy methods. The cell will serve as a reference of optical frequencies in systems of laser standards (532-633 nm wavelengths).
SMV-2023-31: JAXA 2023
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency references intended for the frequency stabilisation of ultra-compact laser sources. These optical references are based on absorption cells filled with ultra-pure absorption gases and allow precise locking of the lasers with laser spectroscopy methods. The cells will serve as the references of optical frequencies in systems of laser standards intended for space-related research (515-633 nm wavelengths).
SMV-2023-33: HeNe2023
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency references intended for the frequency stabilisation of ultra-compact laser sources. These optical references were based on absorption cells filled with ultra-pure absorption gases and they allow precise locking of the lasers with the methods of laser spectroscopy. The cells will serve as the references of optical frequencies in systems of primary length standards (633 nm wavelength).
SMV-2023-32: LPP 3LIF
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency references intended for laser-induced fluorescence and laser spectroscopy research. These optical references are based on absorption cells filled with ultra-pure absorption gases.
SMV-2023-30: ILA compact
Hrabina, Jan ; Holá, Miroslava ; Oulehla, Jindřich ; Pokorný, Pavel ; Lazar, Josef ; Šarlejová, Tatiana ; Šlechtický, Stanislav
The contractual research was oriented towards the development of optical frequency reference intended for the frequency stabilisation of ultra-compact semiconductor laser sources. This optical reference is based on an absorption cell filled with ultra-pure absorption gases, and it allows precise locking of the lasers with laser spectroscopy methods. The cell will serve as a reference of optical frequencies in systems of laser standards (532-633 nm wavelengths).
Optical cavity for ultra-narrow linewidth laser system
Pravdová, Lenka ; Hrabina, Jan ; Čížek, Martin ; Číp, Ondřej ; Procháska, František ; Beneš, Jiří
We designed an optical resonator cavity for narrowing standard commercial laser to sub-Hz linewidth. The optical Fabry Perot resonator is designed hemispherical with all components from ULE material and zero crossing temperature at 33°C. The support Zerodur shelf is isolated from the resonator by two Viton O-rings. The resonator is located in an Aluminium chamber with direct temperature stabilization. 2nd temperature stabilisation is provided by 4 Peltier modules enabling heat exchange between the copper jacket and the assembly surroundings. The stainless-steel jacket has passive isolation and protective function.
System for scanning hydrogen cyanide absorption lines
Hošek, Martin ; Řeřucha, Šimon ; Hrabina, Jan ; Čížek, Martin ; Pravdová, Lenka ; Číp, Ondřej
The definition of both meter and second relies on precisely measured frequency. The convenient sources of such frequencies are lasers stabilized by molecular vapours. The He-Ne lasers stabilized by iodin vapours represent the cornerstone sources in the visible spectrum. On the other hand, the infrared spectrum (particularly the 1550 nm C-band) is of metrological interest thanks to its cost-effective, readily available components. The widely used absorption media at 1550 nm has been two acetylene isotopes (12C2H2, 13C2H2), while H13C14N represents an alternative covering a wider spectrum well corresponding to the telecommunication C-band. The 2ν3 rotational-vibrational band had been investigated, but due to the use of not-so-precise methods, the presented data feature high uncertainty compared to acetylene data. We represent methods that will lead to precise assessments of hydrogen cyanide's absorption line centres with the potential to introduce HCN to Mise en Pratique, making it an internationally recognized source of precise frequency for the realization of traceable laser etalons.

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