Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Willy A.R. Luethy"'
Publikováno v:
SPIE Proceedings.
In contrast to flashlamps the emission of single stripe laser diodes is highly directional and can be focused rather easily to small spots, which gives access to very high pump intensities. Numerical arrangements are possible for transferring the pum
Publikováno v:
SPIE Proceedings.
The optical excitation of the I6 level in Yb:Ho:YLF is studied. Pumping with a wavelength of 953 urn populates the 2F572 upper level of yi3+fromwhere the energy is efficiently transferred to the '6upper laser level ofHo3. Pumping is performed with a
Autor:
E.N. Loubnin, Willy A.R. Luethy, Heinz P. Weber, V. V. Kononenko, George A. Shafeev, Elena D. Obraztsova, S. Gloor, Vitali I. Konov, A.V. Karabutov, Sergej M. Pimenov
Publikováno v:
Lasers in Synthesis, Characterization, and Processing of Diamond.
The effects of laser-induced structural modifications of the diamond surface are considered in relation to i) laser activation of diamond for direct electroless metallization ii) enhanced electron field emission from laser-ablated diamond films. It i
Autor:
Willy A.R. Luethy, Vitali I. Konov, V. V. Kononenko, S. Gloor, A. V. Khomich, Heinz P. Weber, Sergej M. Pimenov
Publikováno v:
Lasers in Synthesis, Characterization, and Processing of Diamond.
The results of laser polishing of 350 micrometers thick free- standing diamond films are reported. The polishing was performed with a grazing beam of a copper vapor laser. It is shown that the laser polishing conditions and the resulting surface roug
Autor:
S. Gloor, Serge V. Garnov, Willy A.R. Luethy, Heinz P. Weber, Vitali I. Konov, Sergej M. Pimenov, A. I. Ritus, Sergei M. Klimentov
Publikováno v:
SPIE Proceedings.
Ultra-fast processes of recombination of free charge carriers optically generated in natural and chemical vapor deposited (CVD) diamond materials; GaAs and Si, were investigated with a 1 nanosecond time resolution by applying a developed microwave-ra
Autor:
Willy A.R. Luethy, Sergej M. Pimenov, O. G. Tsarkova, Serge V. Garnov, Sergei M. Klimentov, Vitali I. Konov, Heinz P. Weber, V. V. Kononenko, S. Gloor
Publikováno v:
SPIE Proceedings.
An 'electrode-free' transient photoconductivity technique was applied to investigate excitation, drift and recombination of non-equilibrium free charge carriers in high quality synthetic polycrystalline diamond films, natural diamond crystals and low
Autor:
Luigi R. Brovelli, Heinz P. Meier, C. Harder, Heinz P. Weber, Peter Rogin, Christian Wyss, Willy A.R. Luethy, Jürg Hulliger
Publikováno v:
Biomedical Systems and Technologies II.
In a first part we report on a Ti:sapphire pumped Er3+:YLF laser. The dopant concentration and the polarization of the pump beam is optimized. The highest slope efficiency is obtained with the polarization of the pump beam parallel to the c-axis and
Autor:
Willy A.R. Luethy, Heinz P. Weber
Publikováno v:
SPIE Proceedings.
In this paper we show that 2 micrometers Tm3+:Ho3+ silica fiber lasers have promising properties for applications in laser medicine and in lidar applications. 2 micrometers lasers are interesting for measurements in the atmosphere since in this range
Publikováno v:
Visual Information Processing
Bright light can temporarily reduce the visual capacity of the human eye. Especially in traffic or in dealing with lasers disability glare can considerably reduce the visual faculty and lead to accidents. Even after the glare light has disappeared ou
Publikováno v:
SPIE Proceedings.
The erbium 2.7-micrometer fluorozirconate fiber laser is investigated in computer simulations and experiments. An output power of 158 mW at 2.7 micrometer is achieved from an erbium- doped single-mode fiber cascade laser. The output power is limited