Laser diodes with phase conjugate feedback
Laser diodes with phase conjugate feedback Laser diodes with phase conjugate feedback
Risø National Laboratory Generation of phase conjugate waves A 4 A 1 Nonlinear medium χ (3) A 2 A 3 The classic configuration for four-wave mixing The interaction between the three waves A 1 , A 2 and A 3 inside the nonlinear medium leads to the generation of a phase conjugate beam A 3 propagating exactly counteropposed to A 4 Paul Michael Petersen, Laser Diodes with External Feedback (tutorial)
Risø National Laboratory Phase aberration correcting properties of phase conjugate waves original distorted corrected • Corrects for phase aberrations inside the laser cavity • Output beam of laser cavity close to the diffraction limit Paul Michael Petersen, Laser Diodes with External Feedback (tutorial)
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Risø National Laboratory<br />
Phase aberration correcting properties of<br />
<strong>phase</strong> <strong>conjugate</strong> waves<br />
original distorted corrected<br />
• Corrects for <strong>phase</strong> aberrations inside the laser cavity<br />
• Output beam of laser cavity close to the diffraction limit<br />
Paul Michael Petersen, <strong>Laser</strong> Diodes <strong>with</strong> External Feedback (tutorial)
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