Multi-Beams Time-Synchronization Measurement for Intertial Confinement Fusion Laser Facility

Zhang, Bo; Zhitao, 彭志涛 Peng; Jiakun, 吕嘉坤 Lü; Zhihong, 孙志红 Sun; Dong, Jun; Zongui, 卢宗贵 Lu

doi:10.3788/cjl201643.0208003

Cited by 3 publications

(1 citation statement)

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“…Laser rangefinders have the advantages of large range, high accuracy and non-contact measurement, and are widely used in aerospace, rail transportation and intelligent manufacturing [1][2]. Laser rangefinders generally consist of an optical transmitting system, an optical receiving system and a signal processing system.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of coaxial optical system for long-distance laser ranging

Huang¹,

Zhang²,

Zhang³

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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Laser collimation beam expanding systems improve the collimation of the beam by improving the spatial divergence angle of the laser beam and have important applications in laser ranging, aerospace, rail transportation and intelligent manufacturing. In order to meet the needs of 100 meters laser ranging, a set of coaxial optical system for receiving and sending has been designed in this paper. The system is mainly composed of fiber collimator and Galileo beam expanding system. Based on the transformation theory of Gaussian beam through thin lens and ZEMAX software, simulation and analysis are carried out. At the same time, the relations of the exit beam waist position and diameter with the distance between the lenses as well as the size changes of the returned beam spot with the measured distance are further analyzed. The results show that the coaxial system for receiving and sending can meet needs of 100 meters laser ranging, which can decrease the size of optical elements and has the advantages of simple structure and compactness compared with the common expanding system of minimum divergence angle. It can provide a more accurate reference for the collimation and expanding operation part in related scientific research and engineering practice activities.

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Section: Introductionmentioning

confidence: 99%

Design and analysis of coaxial optical system for long-distance laser ranging

Huang¹,

Zhang²,

Zhang³

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

View full text Add to dashboard Cite

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High-precision spatiotemporal three-dimensional ultrashort pulse synchronization with optical Kerr effect

Zhang,

Xu,

Liu

et al. 2024

Opt. Express

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In studying the interaction of multiple ultrashort pulses with matter, high requirements are put forward for spatiotemporal synchronization accuracy. Limited by the response time and bandwidth of existing devices, the synchronization of multiple ultrashort pulses still faces significant difficulties. By observing the transient phenomena of the optical Kerr effect, high-precision, three-dimensional (x, y, t) synchronization of ultrashort pulses at different angles was achieved. In the optical Kerr effect, the polarization state of the signal pulse changes only when it coincides with the pump pulse, at which point the signal pulse passes through the analyzer. The changes in the intensity and phase of the signal pulse is positively correlated with the degree of spatiotemporal coincidence. In this study, 10-ps pulses were used in the experiments. By observing the intensity and phase distribution of the signal pulses, a time synchronization accuracy between two pulses of less than 1 ps and spatial synchronization accuracy of ±125 µm and ±3 µm in the x and y directions, respectively, were achieved. Moreover, the synchronization of two pulses at an angle of 90 ° was measured, further proving that the method can achieve the spatiotemporal synchronization of pulses with large angles. Therefore, this method has important application prospects in the study of multi-beam interactions with matter and other ultrafast physical phenomena.

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