High repetition rate picosecond LiNbO<sub>3</sub> THz parametric amplifier and parametric gain

Yuting Yang; Gang Zhao; Yue Huang; Liwen Feng; Senlin Huang; Kexin Liu

doi:doi:10.3788/COL202018.051901

Chinese Optics Letters, 2020, 18 (5): 051901, Published Online: Apr. 28, 2020

High repetition rate picosecond LiNbO₃ THz parametric amplifier and parametric gain Download： 675次

Yuting Yang Gang Zhao Yue Huang Liwen Feng Senlin Huang ^*Kexin Liu

Author Affiliations

State Key Laboratory of Nuclear Physics and Technology and Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China

Figures & Tables

Fig. 1. Sketch of the TPA experimental setup.

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Fig. 2. Measurement results for THz radiation (a) wavelength and (b) bandwidth.

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Fig. 3. THz beam profile measurement results of the LN TPA. (a)–(d) THz beam profiles measured at 2.0, 5.0, 8.0, and 11.0 mm downstream of the THz radiation exit surface (S2) of the LN crystal. (e) The beam radii for the THz beam plotted as a function of the measurement distance. The solid curves were calculated according to the estimated $M^{2}$ parameters.

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Fig. 4. (a) Measured THz pulse energy as a function of frequency for different effective parametric amplification lengths $L$ . (b) Measured pulse energy of THz wave output as a function of $L$ at four different THz frequencies.

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Fig. 5. THz parametric gain ( $g_{THz}$ ) versus frequency. The curves represent theoretical results calculated using Eq. (2), for which three different $κ$ values were used.

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Yuting Yang, Gang Zhao, Yue Huang, Liwen Feng, Senlin Huang, Kexin Liu. High repetition rate picosecond LiNbO₃ THz parametric amplifier and parametric gain[J]. Chinese Optics Letters, 2020, 18(5): 051901.

High repetition rate picosecond LiNbO₃ THz parametric amplifier and parametric gain Download： 675次

Fig. 1. Sketch of the TPA experimental setup.

Fig. 2. Measurement results for THz radiation (a) wavelength and (b) bandwidth.

Fig. 4. (a) Measured THz pulse energy as a function of frequency for different effective parametric amplification lengths $L$ . (b) Measured pulse energy of THz wave output as a function of $L$ at four different THz frequencies.

Fig. 5. THz parametric gain ( $g_{THz}$ ) versus frequency. The curves represent theoretical results calculated using Eq. (2), for which three different $κ$ values were used.

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High repetition rate picosecond LiNbO3 THz parametric amplifier and parametric gain Download： 675次

Fig. 1. Sketch of the TPA experimental setup.

Fig. 2. Measurement results for THz radiation (a) wavelength and (b) bandwidth.

Fig. 4. (a) Measured THz pulse energy as a function of frequency for different effective parametric amplification lengths L. (b) Measured pulse energy of THz wave output as a function of L at four different THz frequencies.

Fig. 5. THz parametric gain (gTHz) versus frequency. The curves represent theoretical results calculated using Eq. (2), for which three different κ values were used.

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High repetition rate picosecond LiNbO₃ THz parametric amplifier and parametric gain Download： 675次

Fig. 4. (a) Measured THz pulse energy as a function of frequency for different effective parametric amplification lengths $L$ . (b) Measured pulse energy of THz wave output as a function of $L$ at four different THz frequencies.

Fig. 5. THz parametric gain ( $g_{THz}$ ) versus frequency. The curves represent theoretical results calculated using Eq. (2), for which three different $κ$ values were used.