公开(公告)号：US11543704B1

公开(公告)日：2023-01-03

申请号：US17086823

申请日：2020-11-02

Applicant: Beam Engineering For Advanced Measurement Co.

Inventor： Nelson V. Tabirian ,  Mark J. Moran ,  Olena Uskova ,  Justin Sigley

IPC: G02F1/1337 ,  G02F1/1334 ,  G02F1/01 ,  G02F1/137 ,  G02F1/1333

Abstract: Methods, materials, systems, and devices for stabilizing photoalignment patterns in liquid crystal diffractive waveplates (LCDWs) against radiation, mechanical, and electrical influences by creating a polymer network within the bulk of LCDW such as the polymer network does not affect the LC orientation pattern in the bulk of the DW and does not result in residual retardation and light scattering while being able to fast switching and relaxation with no haze at application of electric fields.

公开(公告)号：US20030206288A1

公开(公告)日：2003-11-06

申请号：US10135572

申请日：2002-05-01

Applicant: Beam Engineering for Advanced Measurement Co.

Inventor： Nelson Tabirian ,  Sarik Nersisyan

IPC: G01J001/00

CPC classification number: G01J1/4257

Abstract: The objective of the present invention is providing a method and a simple instrument that can be used on a routine basis to accurately and quickly measure the focus position, waist radius, divergence, quality, power and power density of a laser beam. The measurement is performed by scanning a thin film of a nonlinear optical material in the focal region along the propagation direction of the beam and registering the variation of the on-axis intensity of the laser beam by a photodetector.

Abstract translation: 本发明的目的是提供一种可以常规使用的方法和简单的仪器，以准确和快速地测量激光束的焦点位置，腰围，发散度，质量，功率和功率密度。 通过沿着光束的传播方向扫描焦点区域中的非线性光学材料的薄膜并通过光电检测器记录激光束的轴上强度的变化来进行测量。

公开(公告)号：US20040081218A1

公开(公告)日：2004-04-29

申请号：US10280547

申请日：2002-10-25

Applicant: Beam Engineering for Advanced Measurement Co.

Inventor： Nelson Tabirian ,  Sarik Nersisyan

IPC: H01S003/22

CPC classification number: H01S3/005 ,  G02B3/12

Abstract: The objective of the present invention is providing a method and ultra light-weight instruments for controlling propagation of high energy laser beams. The control optical systems are based on gases and techniques for creating gas concentration and flow patterns that modulate the refractive index along the path of propagation of a laser beam.

Abstract translation: 本发明的目的是提供一种用于控制高能激光束传播的方法和超轻型仪器。 控制光学系统基于用于产生沿着激光束的传播路径调制折射率的气体浓度和流动模式的气体和技术。