Concept
Spherical aberration
Related publications (68)
Micro-replication of Optical Lenses in Glass using Sol Gel Technology
Martinus Gijs, Abdeljalil Sayah, Virendra Kumar Parashar
A new method to realize arrays of micro-lenses using a sol gel glass replication technology is presented. Polydimethyl-siloxane (PDMS) master structures are used for the replication of thin glass membranes, which, by an appropriate annealing procedure, res ...
2002Fabrication of multilayer systems combining microfluidic and micro-optical elements for fluorescence detection
Nico de Rooij, Hans Peter Herzig, René Dändliker
This paper presents the fabrication of a microchemical chip for the detection of fluorescence species in microfluidics. The microfluidic network is wet-etched in a Borofloat 33 (Pyrex) glass wafer and sealed by means of a second wafer. Unlike other similar ...
2001Compact fast-steering tip/tilt laser scanner for high power material processing applications
The common configuration for deflecting laser beams in two dimensions is based on two single-axis galvanometric scanners placed perpendicular to each other. Over recent years, these fast scanners have proved to be both very reliable and very accurate. They ...
EPFL2000Optical logic gates by nonlinear mixing in BBO
An experimental demonstration of a set of optical logic gates (OR, XOR, AND) is shown using non-linear mixing in a BBO crystal. Pulses generated by a femtosecond Ti:Sapphire laser at 800 nm (140 fs duration, 2nJ/pulse) are split in 4 beams evenly separated ...
Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa1999Operation of a quasi-optical gyrotron with a Gaussian output coupler
Minh Quang Tran, Jean-Philippe Hogge, Trach-Minh Tran
The operation of a 92 GHz quasi-optical gyrotron having a resonator formed by a spherical mirror and a diffraction grating placed in -1 order Littrow mount is presented. A power of 150 kW with a Gaussian output pattern was measured. The Gaussian content in ...
1996Measurement of the Electric-Field Pattern of a Fabry-Perot Resonator Used in Quasi-Optical Gyrotrons
Minh Quang Tran, Jean-Philippe Hogge
The field pattern of the resonator used in a quasi-optical gyrotron operating in the millimetre wave range is measured. Two resonators are studied: one composed of a spherical mirror and an ellipsoidal grating and the other symmetric using two mirrors with ...
1993Michelson interferometer for detection of fast displacements of less than a quarter-wave over small areas
Coherent light is divided into a reference and a probing beam at a beam splitter. The reference mirror is mounted onto a piezoelectric transducer driven by a sawtooth generator triggered by a clock. The probing beam is focused by a lens onto the reflecting ...
1975