Abstract:
The invention relates to an active laser material having a base material doped with active ions, giving said base material laser properties, the ion concentration being equal to or higher than 2%.The invention also relates to a microlaser produced with such a material, as well as a process for producing such a material. The microlaser incorporates an active medium (6) produced by epitaxial growth on a substrate (8), the latter then being removable, as well as microlaser cavity mirrors (2, 4). A pumping beam (10) makes it possible to optically pump the cavity.
Abstract:
The invention relates to an optical parametric oscillator characterized in that it comprises an OPO nonlinear material (18) and two mirrors (24, 26) on either side of said nonlinear material and forming an OPO cavity and a switched microlaser (2, 6, 8, 26) for generating an OPO cavity laser pumping beam.
Abstract:
A microlaser cavity to a microlaser incorporating an active solid medium (38) and means (44) for switching the cavity, whilst also having, within said cavity, at least one element (46) of an optically nonlinear material, making it possible to multiply the basic frequency of the laser cavity by a factor n (n.gtoreq.2).
Abstract:
A microlaser having input and output mirrors defining a microlaser cavity, a solid active dielectric medium disposed in the microlaser cavity, and a pumping mechanism which pumps the microlaser and which includes at least one vertical cavity semiconductor laser. The microlaser may also include a microoptical focusing device, passive and/or active cavity switches. A plurality of such microlasers can be assembled to form a bidimensional network.
Abstract:
A microoptical component including a microlens having a focal axis and a microbeam to which said microlens, is integrally fixed said microbeam extending along an axis substantially perpendicular to the focal axis of the microlens and undergoing elastic deformations along an axis substantially perpendicular to the focal axis of the microlens and to the axis along which the microbeam extends.
Abstract:
A self-aligned, monolithic, solid microlaser with passive switching by a saturable absorber and a production process therefor. The cavity for the microlaser has a solid active medium, a saturable absorber, an entrance mirror and an exit mirror, wherein the saturable absorber is a thin film of saturable absorbent material directly deposited on the solid active medium.
Abstract:
An optical pump device including a pump source optically connected to an optical divider including one input channel and n output channels. The input channel is configured to receive a pump wave derived from the source and the n output channels are configured to output n pump waves, where n is an integer greater than 1. The pump device can be used in an optical amplification device. The device has applications in all domains in which several optical pumps are necessary, and more particularly in the domain of optical telecommunications, and for example for optical amplifiers.
Abstract:
The invention relates to a microlaser cavity having an active laser medium and reflection means at the entrance and exit of the cavity, characterized in that the reflection means are dimensioned in such a way that, in the active medium, the size of a pumping beam is at the most equal to the size of a laser beam emitted by the cavity.
Abstract:
This laser telemetry device operating on the principle of the measurement of the transit time of a light pulse, is characterized in that it comprises: a passive switching microlaser (2), means (6, 10) for receiving a light pulse (18, 19) reflected by an object (4) and for the detection of the reception time of said pulse, means (8, 10) for the detection of the emission time of a pulse from the microlaser (2), means (12) for measuring the time interval or slot separating the microlaser pulse emission time and the reflected beam reception time.
Abstract:
Compact electron gun having a microdot electron source and a semiconductor laser using said gun for electronic pumping. A compact electron gun is provided having a microdot electron emitting source (2), an anode (8) spaced from the microdots, means (16) for applying a high voltage to the and, array (10) of electrodes distributed around the bean emitted by the source for the strip focussing thereof onto the anode. The array also serves as an electrostatic screen for the source with respect to the high voltage of the array. The array is positioned between the source and the anode and has at least two pairs of electrodes (18, 18b, 20a, 20b) of different dimensions which are raised to respectively positive and negative voltages. The positive and the negative voltages produce a weak electrostatic field between the source and the electrode array and a strong electrostatic field between the electrode array and the anode. The electron gun also has means for applying a medium voltage to the electrode array and means for applying an appropriate voltage to the microdots.