Novel theory for propagation of tilted Gaussian beam through aligned optical system

Xia, L.; Gao, Yunguo; Han, Xudong

doi:10.1016/j.optcom.2016.11.076

Cited by 5 publications

(1 citation statement)

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“…Our prototype laser-pointing system contains a laser source, a thin lens and a CCD detector, as shown in Figure 1. In the prototype system, for a beam tilt T the corresponding spot image M on the CCD is simulated through a virtual optical system method for a tilted beam [24] . The distance u between the source plane and the lens is set to be equal to the focal length f, so that the image beam waist can be approximately located on the focal plane for its largest waist radius w 02 ≈ λf / (π w 01 ) (half width at 1/e 2 center intensity), and the spot radius w 2 on the CCD can then be expressed as…”

Section: Neural Network Methods For Laser-pointing Error Measurementmentioning

confidence: 99%

Decoupling of the position and angular errors in laser pointing with a neural network method

Xia

Chen

et al. 2020

High Pow Laser Sci Eng

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In laser-pointing-related applications, when only the centroid of a laser spot is considered, then the position and angular errors of the laser beam are often coupled together. In this study, the decoupling of the position and angular errors is achieved from one single spot image by utilizing a neural network technique. In particular, the successful application of the neural network technique relies on novel experimental procedures, including using an appropriate small-focal-length lens and tilting the detector, to physically enlarge the contrast of different spots. This technique, with the corresponding new system design, may prove to be instructive in the future design of laser-pointing-related systems.

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Section: Neural Network Methods For Laser-pointing Error Measurementmentioning

confidence: 99%