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Laser amplifier system and laser amplifier method

A technology of laser amplification and laser media, applied in the direction of laser devices, the structure/shape of active media, active media materials, etc., can solve the problems of small signal amplification and high saturation amplification

Active Publication Date: 2010-11-03
HIGH Q LASER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the methods known from the prior art suffer from the disadvantage that the small-signal amplification is substantially higher than the saturation amplification that prevails in constant operation
Continuous laser emission does not play a significant role due to the use of downstream frequency conversion, however, it is a disadvantage in other applications

Method used

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  • Laser amplifier system and laser amplifier method

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Embodiment Construction

[0036] figure 1 A schematic diagram is shown of a first usable example of a laser amplifying device according to the invention comprising a laser medium 5 for generating an amplified laser emission AS from a useful signal to be amplified. The laser medium is pumped by a pump source 2, in particular a laser diode source. The radiation of the pump source 2 is coupled via the lens 3 and the dichroic beam splitter 4 into the common beam path of the background signal and the useful signal, so that in the present example the laser medium 5 is pumped through its end face.

[0037] The electro-optic modulator is used as a switching component to couple the useful signal to be amplified into the laser medium 5 by rotating the polarization direction of the input signal ES. Thus, by changing the voltage applied at the switching element 1, the polarization of the input signal ES coupled into the amplifying means can be changed as desired, e.g. from p-polarization when zero voltage is appl...

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Abstract

A laser amplification arrangement comprising a laser medium for producing an amplified laser emission as output signal from a useful signal to be amplified and a pump source has a switching component for coupling the useful signal into the laser medium. Laser medium and switching component are formed and arranged so that a division of an input signal (ES) into the useful signal and a background signal is effected, the background signal being passed through the laser medium at a time immediately before and / or after the coupling-in of the useful signal to be amplified.

Description

technical field [0001] The invention relates to a laser amplifying device and a laser amplifying method. Background technique [0002] Ultrashort pulse laser systems, i.e. laser devices capable of generating laser pulses with characteristic pulse durations in the femtosecond or picosecond range, have been known for a long time in various embodiments of the prior art, femtosecond and picosecond Lasers are increasingly being used in various types of applications. Firstly, these applications always require high laser powers and laser pulse energies; secondly, this particular application often requires the possibility to switch on or off essentially at will through the underlying network, ie through pulse trains that are trains of many individual pulses. So-called pulse pickers are used for this purpose, generally using acousto-optic or electro-optic switching mechanisms. However, at relatively high powers of a few tens of watts, the use of these pulse pickers inevitably poses...

Claims

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Application Information

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IPC IPC(8): H01S3/16H01S3/23H01S3/067
Inventor 丹尼尔·科普夫于尔格·奥斯德奥
Owner HIGH Q LASER