公开(公告)号：US20140276672A1

公开(公告)日：2014-09-18

申请号：US14198319

申请日：2014-03-05

Applicant: AMO Development LLC.

Inventor： John WY Lee ,  Jian He ,  Jiandong Xu ,  Donald Simpson ,  Gennady Imeshev ,  Oleg J. Korovyanko ,  Zenon Witowski

IPC: A61F9/008

CPC classification number: A61F9/0084 ,  A61F9/00825 ,  A61F2009/0087 ,  A61F2009/00872 ,  A61F2009/00887 ,  A61F2009/00889

Abstract: Embodiments of this invention are directed to a laser system configured to deliver a pulsed laser beam to a patient's eye. The system includes a laser engine comprising an optically-pumped laser oscillator configured with an extracavity waveplate, and an optional intracavity waveplate, that can be tilted and rotated to provide a limited range of wavelengths for laser mode excitation and to maintain stable mode-locked laser operation. In an embodiment, the present design includes an oscillator and a photosensor, such as a fast photodetector or an autocorrelator, positioned to receive a beam of laser light associated with the oscillator or laser engine, and a controller configured to receive readings from the photosensor and alter the laser gain provided within the oscillator to a level outside the bistable performance zone avoiding mode and gain competitions.

Abstract translation: 本发明的实施例涉及一种被配置为将脉冲激光束传送到患者眼睛的激光系统。 该系统包括激光引擎，其包括配置有外腔波片的光泵浦激光振荡器和可选的腔内波片，其可以被倾斜和旋转以提供用于激光模式激发的有限范围的波长并且保持稳定的锁模激光器 操作。 在一个实施例中，本设计包括振荡器和诸如快速光电检测器或自相关器的光电传感器，其被定位成接收与振荡器或激光引擎相关联的激光束，以及控制器，被配置为从光电传感器接收读数， 将振荡器内提供的激光增益改变为双稳态性能区域之外的水平，避免模式和增益竞争。

公开(公告)号：US20230181368A1

公开(公告)日：2023-06-15

申请号：US17643812

申请日：2021-12-10

Applicant: AMO Development, LLC

Inventor： Cynthia Villanueva ,  Deepali Mehta-Hurt ,  Hong Fu ,  Jiandong Xu ,  Alireza Malek Tabrizi ,  Griffith Altmann

IPC: A61F9/008 ,  G02B26/10

CPC classification number: A61F9/00827 ,  G02B26/101 ,  G02B26/108 ,  A61F2009/0087 ,  A61F2009/00897

Abstract: An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed by the XY and Z scanners at a location tangential to a parallel of latitude of the surface of the lenticule. The XY and Z scanners then move the scan line in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, and a prism is used to change the orientation of the scan line of the high frequency scanner between successive sweeps. In each sweep, within a central area of the lenticule where the sweeps overlap, the laser is periodically blanked (or delivered with significantly reduced pulse energy) to reduce the total energy delivered in that area.