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Apparatus For Adaptive Optical Pulse Compression and Correction Of Distortion
The present invention relates to the field of compression of ultrashort optical pulses. Since the invention of mode-locked lasers, considerable effort has been directed towards the generation of ultrashort optical pulses. Efficient pulse compression generally requires characterization of the pulses. In cases where the pulses are uncharacterized, or when the spectral phase cannot be approximated by the leading few terms of the corresponding Taylor expansion, current techniques for pulse compression cannot be used efficiently, since the spectral transfer function needed to form the desired output pulse cannot be calculated. Consequently, compression of arbitrary uncharacterized pulses down to the minimum time-bandwidth product cannot be accomplished by prior art methods since the relative phases between the spectral components of the input pulses are not known. The present invention seeks to provide an improved pulse compressor, which overcomes the disadvantages and drawbacks of existing ultrashort pulse compressors, especially with respect to their application to pulses which are completely uncharacterized or partially characterized, or which originate from a laser source whose output varies with time.present relates field compression ultrashort optical pulses

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