Chinese Optics Letters, Volume. 21, Issue 2, 021901(2023)

Multi-color laser generation in periodically poled KTP crystal with single period

Sujian Niu1,2, Zhiyuan Zhou1,2、*, Jingxin Cheng3, Zheng Ge1,2, Chen Yang1,2, and Baosen Shi1,2、**
Author Affiliations
  • 1CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
  • 2Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 3Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin 300308, China
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    Figures & Tables(4)
    Numerical simulations of poling period for different types and orders of QPM processes. The four named lines ΛZZZ, 3ΛZZZ, ΛYYZ, 3ΛZYY represent type-0 first-order QPM (ZZZ), type-0 third-order QPM (ZZZ), type-II first-order QPM (YYZ), and type-I third-order QPM (ZYY), respectively. Λ = 8.95 µm represents the poling period of the PPKTP crystal used for experimental testing.
    Experimental setup for testing various QPM processes. QWP, quarter-wave plate; HWP, half-wave plate; SMF, single-mode fiber; FC, fiber collimator; DM, dichroic mirror; L1–L3, lenses; F, filters; PM, power meter; PPKTP, periodically poled potassium titanyl phosphate.
    Measurements of temperature phase matching and generated multi-color laser. (a)–(c) Temperature tuning curve of PPKTP crystal for different types and orders of QPM processes: (a) type-0 first-order QPM for SHG of 1063.8 to 531.9 nm; (b) type-0 third-order QPM for SHG of 783.9 to 391.95 nm; (c) type-II first-order QPM for SHG of 796.94 to 398.47 nm. (d) Photo of an RGB laser beam is obtained by splitting the multi-color laser beam with a visible grating.
    Measured spectrum of the multi-color lasers that are composed of different QPM processes.
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    Sujian Niu, Zhiyuan Zhou, Jingxin Cheng, Zheng Ge, Chen Yang, Baosen Shi. Multi-color laser generation in periodically poled KTP crystal with single period[J]. Chinese Optics Letters, 2023, 21(2): 021901

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    Paper Information

    Category: Nonlinear Optics

    Received: Jun. 12, 2022

    Accepted: Aug. 12, 2022

    Posted: Aug. 15, 2022

    Published Online: Sep. 20, 2022

    The Author Email: Zhiyuan Zhou (zyzhouphy@ustc.edu.cn), Baosen Shi (drshi@ustc.edu.cn)

    DOI:10.3788/COL202321.021901

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