Q-switched partially coherent lasers with controllable spatial coherence

• Autorzy: Wang Yushuang , Ji Xuanxuan , Chen Ziyang , Pu Jixiong

Identyfikatory

DOI

10.37190/oa210208

• Języki publikacji: EN

Abstrakty

EN

We develop a Q-switched degenerate laser, delivering a partially coherent light pulse of duration about 16 ns. The spatial coherence of the output laser pulse can be varied by tuning the spatial filter inside the laser resonator, and the oscillating transverse mode structure can be determined by measuring the degree of coherence of the output laser pulse. It is shown that the larger is the diameter of the spatial filter, the more are the oscillating transverse modes, and the lower is the degree of coherence. Based on coherent-mode representation for the partially coherent source, we can estimate the transverse mode contribution to the output partially coherent laser. The experimental results on suppressing speckle demonstrate that the generated partially coherent light possesses the characteristics of rapid reduction of spatial coherence, making it an ideal source for high-speed imaging and ranging applications.

Słowa kluczowe

EN

partially coherent; degenerate laser; speckle suppress

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2021
• Tom: Vol. 51, nr 2
• Strony: 245--256
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Wang Yushuang

• College of Information Science and Engineering, Huaqiao University, Xiamen, Fujian 361021, People’s Republic of China

autor

Ji Xuanxuan

• Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, Fujian 361021, People’s Republic of China
• College of Engineering, Niigata University, Niigata 950-2181, Japan

autor

Chen Ziyang

• College of Information Science and Engineering, Huaqiao University, Xiamen, Fujian 361021, People’s Republic of China
• Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, Fujian 361021, People’s Republic of China

autor

Pu Jixiong

• College of Information Science and Engineering, Huaqiao University, Xiamen, Fujian 361021, People’s Republic of China
• Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, Fujian 361021, People’s Republic of China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).