Figure 6 - uploaded by Alexander Laskin
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Performance of modern high-power lasers can be strongly improved by control of irradiance distribution in laser optical systems: flat-top or super-Gaussian irradiance profiles are optimum for amplification in MOPA lasers and for reduction of thermal effects in crystals of solid-state ultra-short pulse lasers; variable profiles are also important in...
Contexts in source publication
Context 1
... As a solution to the task of providing a necessary resulting spot size with conserving the flattop profile over extended DOF it is fruitful to apply imaging techniques. Essential features of this approach are considered in paper 15 , here we emphasize on most important for practice aspects and consider telecentric imaging system shown in Fig. 6, which is also called as a relay imaging system. ...
Context 2
... the optical system is constant and doesn't depend on position of the Object, -if the Object is located in front focal plane of 1 st component its Image is in back focal plane of 2 nd component. From the point of view of geometrical optics an Image is always created by a beamlet of rays emerging from a particular point of an Object, therefore in Fig. 6 there are shown beamlets of divergence 2u from couple of Object points. In case of laser beams the divergence of beamlets corresponds approximately to divergence of a laser beam 2, i.e. is very small for TEM 00 beams, and the intensity profile behaviour in a telecentric system should be analysed using diffraction theory. Let's ...
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Control of irradiance distribution in complex optical systems of modern high-power lasers is of great importance to increase efficiency of optical techniques used to reach high power levels. For example, flat-top or super-Gaussian irradiance profiles are optimum for amplification in MOPA lasers and for reduction of thermal effects in crystals of so...
