Übersetzung für "Thermal lensing" in Deutsch

The thermal lensing effect and the optical aberrations are caused by anisotropic temperature distribution in the optical medium.

This is due to a phenomenon called thermal lensing, or thermal blooming.

In case the frequency of the laser light is doubled by non-linear frequency doubling crystals the "thermal lensing" effect is even more drastic.

With a frequency doubled, diode pumped solid state laser the "thermal lensing" effect is eminent as the pump energy density is very high within a relatively small active volume.

The use of state of the art DPSS lasers is meant to reduce the "thermal lensing" by complicated and costly concepts such as the slap geometry.

With the construction according to the invention as claimed in claim 1 a complete compensation of the so-called "thermal lensing" is obtained.

It is for instance possible that the pump beam energy has to be modulated up to 50% or 30% to fully compensate the "thermal lensing".

To achieve this effect it is necessary that the number of areas with lower energy density 111, 112, 113, 114 is one higher than the number of areas with high energy density 115, 116, 117, 118 in order to realize a full compensation of the "thermal lensing" effect.

Depending of the field of use the individual inventive features, such as the pump intensity gradient to compensate the "thermal lensing" effect as well as the direct metallization of the frequency doubling crystal and the laser crsytal on the one hand but also the way of keeping the temperature of the frequency doubling crystal constant is suited to be used separately on a possibly existing system so that with the existing state of the art also existing laser systems can be supplemented at profitable costs.

Changes of the position of the TCP arise as a consequence of thermal stress of the optical components of the beam guiding system and due to thermally caused focal length changes (“thermal lensing” effects).

For very high laser powers in the IR (1 to 10.6 µm), most prisms and beamsplitters are not useful because they suffer from thermal lensing.

For very high laser powers in the IR (1 to 10.6 Â?m), most prisms and beamsplitters are not useful because they suffer from thermal lensing.

In binoculars, they offer outstanding viewing, even at twilight, and reduce the thermal lensing effect in applications that use high luminous flux, such as 3-D cinema projectors, because the glass absorbs hardly any light at all.

Thermal lenses are caused by the absorption of laser light in optics.

This improves the decoupling of the thermal lenses of the individual beams 15 from one another.

Thermal lenses do not use C- or CS-mount lenses which are commonly used on standard cameras.

The pump intensity gradients produced along the axis of the laser crystal automatically lead to changing, repeating temperature gradients so that in the direction of the axis thermal lenses with positive and negative foci lie behind each other.

Additional advantages with pumping in the absorption band around 870 nm are that because of a small Stokes shift, high efficiency (and thus smaller thermal lenses) can be attained.

A clever combination of optics that exhibit both properties in a single lens system makes up for the deviations caused by thermal lenses.

Mirror lens polarized bamboo wooden sunglasses are equipped with silver colored mirrored polarized thermal cured lenses, which provide a clear vision and protect against glare and UV radiation.

The residual absorption in the high power range of a few hundred Watts, moreover, causes thermal lenses in the material, and therefore an undesired change of the beam parameters by the insulator.

That is, the saw kerfs help to prevent the thermal lenses stabilizing the resonator from being negatively affected by thermal interference for example from adjacent beams in the resonator.

One particularly favorable solution, for example, provides for the solid-state member to be cooled via a flat side by means of a heat sink in order to prevent thermal tensions and a thermal formation of lenses in it.

That is, the mutual spacing of the laser beams is so selected that thermal interference among the thermal lenses of adjacent beams is extremely slight.

For high extinction factors, very high acoustic powers are required, which may amount to 100 W and more, which causes a transient, thermal, non-equilibrium aberration in the modulator material analogous to thermal lenses.

To optimize the function of the near-field far-field transformation, the dynamic range of the thermal lenses should not extend to the limit of the stable range in the g-diagram in case of varying operating conditions of the laser 1 ??.

By these areas of different intensity or energy density 93, 94 and 95, 96 and 97 in the laser crystal 3 several, repeating temperature gradients are generated which lead to thermal lenses with positive and negative focal distance.