Laser speckle reduction by a hybrid MEMS diffuser device with continuous height profile

2017 ◽  
Vol 24 (6) ◽  
pp. 2561-2568
Author(s):  
Qiaoming You ◽  
Dayong Qiao ◽  
Xiumin Song ◽  
Changfeng Xia ◽  
Yanan Zhang
2019 ◽  
Vol 10 (6) ◽  
pp. 2869 ◽  
Author(s):  
Taylor L. Bobrow ◽  
Faisal Mahmood ◽  
Miguel Inserni ◽  
Nicholas J. Durr

2017 ◽  
Author(s):  
Robert Furstenberg ◽  
Christopher A. Kendziora ◽  
Christopher J. Breshike ◽  
Viet Nguyen ◽  
R. Andrew McGill

2008 ◽  
Vol 28 (12) ◽  
pp. 2245-2249 ◽  
Author(s):  
李抄 Li Chao ◽  
姜宝光 Jiang Baoguang ◽  
夏明亮 Xia Mingliang ◽  
程少园 Cheng Shaoyuan ◽  
宣丽 Xuan Li

2020 ◽  
Vol 51 (1) ◽  
pp. 1948-1951
Author(s):  
Kai-Han Chang ◽  
Thomas Seder ◽  
John Harden ◽  
Liang-Chy Chien

1979 ◽  
Vol 1 (4) ◽  
pp. 303-324 ◽  
Author(s):  
John G. Abbott ◽  
F. L. Thurstone

A theoretical and experimental study of speckle, as applied to ultrasonic imaging, is presented. The concept of laser speckle is briefly reviewed and is used as a starting point to explain the origin of acoustic speckle. The primary differences between these two phenomena are discussed and are confirmed by experiment. An experimental study of speckle reduction by summation of multiple images is also presented. Several techniques for generating independent speckle patterns for use in image summation schemes are proposed. A phased array, dynamically focused sector imaging system was used in all of the experimental studies reported.


2019 ◽  
Vol 1 (1) ◽  
pp. 015036
Author(s):  
Mahmoud Mohamed ◽  
M A Qianli ◽  
Liam Flannigan ◽  
Chang-Qing Xu

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