| 摘要 |
PURPOSE:To provide the optical pulse shaping device and the optical pulse shaping method by which an ultrashort pulse can be obtained with high efficiency by steepening not only the tip part but also the rear end part of an optical pulse. CONSTITUTION:The device is provided with a saturable absorber 5 for allowing an optical pulse to pass through, and a phase conjugate mirror 6 for reflecting the optical pulse passing through the saturable absorber 5, in phase conjugate state toward the saturable absorber 5. The optical pulse is allowed to pass through the saturable absorber 5 and the tip part of the optical pulse is steepened, and the passing optical pulse is reflected in phase conjugate state toward the saturable absorber 5 by the phase conjugate mirror 6, and allowed to pass through the saturable absorber 5 again, by which the tip part and the rear end part of the optical pulse are steepened. |
