Multi-channel pseudo-random coding single-photon ranging and imaging

Wu, Di; Yang, Lei; Chen, Xiuliang; Li, Zhaohui; Wu, Guang

doi:10.3788/col202220.021202

Cited by 9 publications

(4 citation statements)

References 24 publications

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“…The 1.4-1.8 μm lasers combine the advantages of being eye-safe and high atmospheric transmittance, providing them with important applications in fields, such as laser medicine and laser detection and ranging (LIDAR) [1][2][3] . In order to achieve laser emissions in such a range, several methods have been exploited.…”

Section: Introductionmentioning

confidence: 99%

Eye-safe intra-cavity diamond cascaded Raman laser with high peak-power and narrow linewidth

Mi,

Lin,

et al. 2024

中国光学快报

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The 1.4-1.8 μm eye-safe lasers have been widely used in the fields of laser medicine and laser detection and ranging. The diamond Raman lasers are capable of delivering excellent characteristics, such as good beam quality concomitantly with high output power. The intra-cavity diamond Raman lasers have the advantages of compactness and low Raman thresholds compared to the external-cavity Raman lasers. However, to date, the intra-cavity diamond cascaded Raman lasers in the spectral region of the eye-safe laser have an output power of only a few hundred milliwatts. A 1485 nm Nd:YVO 4 /diamond intra-cavity cascaded Raman laser is reported in this paper. The mode matching and stability of the cavity were optimally designed by a V-shaped folded cavity, which yielded an average output power of up to 2.2 W at a pulse repetition frequency of 50 kHz with a diode to second-Stokes conversion efficiency of 8.1%. Meanwhile, the pulse width of the second-Stokes laser was drastically reduced from 60 ns of the fundamental laser to 1.1 ns, which resulted in a high peak power of 40 kW. The device also exhibited single longitudinal mode with a narrow spectral width of < 0.02 nm.

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Section: Introductionmentioning

confidence: 99%

Eye-safe intra-cavity diamond cascaded Raman laser with high peak-power and narrow linewidth

Mi,

Lin,

et al. 2024

中国光学快报

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“…Time synchronization is achieved by emitting laser pulses in a two-way loopback mode, and the T2L2 (Time Transfer by Laser Link), jointly developed by (Centre National d'Etudes Spatiales) and OCA (Observatoire de la Côte d'Azur), has a synchronization accuracy of about 100 ps [10] . Alternatively, the laser is modulated by pseudo-random code (PRC) for ranging [11,12] , and a ranging accuracy of 0.33 mm was achieved in fiber [11] . Khader et al [13] .…”

Section: Introductionmentioning

confidence: 99%

Mitigation of the impact of Doppler shift on ranging accuracy

Li,

Sun,

et al. 2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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“…Random numbers play a critical role in Monte Carlo simulation, information cryptography, secure communications, and detection systems [1][2][3][4][5][6][7] . An ideal random bit sequence should be unpredictable, unrepeated, and statistically unbiased.…”

Section: Introductionmentioning

confidence: 99%

400 Gb/s physical random number generation based on deformed square self-chaotic lasers

Dong

et al. 2023

中国光学快报

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A circular-sided square microcavity laser etched a central hole has achieved chaos operation with a bandwidth of 20.8 GHz without external optical feedback or injection, in which the intensity probability distribution of a chaotic signal with a twopeak pattern was observed. Based on the self-chaotic microlaser, physical random numbers at 400 Gb/s were generated by extracting the four least significant bits without other complex post-processing methods. The solitary chaos laser and minimal post-processing have predicted a simpler and low-cost on-chip random number generator in the future.

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Multi-channel pseudo-random coding single-photon ranging and imaging

Cited by 9 publications

References 24 publications

Eye-safe intra-cavity diamond cascaded Raman laser with high peak-power and narrow linewidth

Eye-safe intra-cavity diamond cascaded Raman laser with high peak-power and narrow linewidth

Mitigation of the impact of Doppler shift on ranging accuracy

400 Gb/s physical random number generation based on deformed square self-chaotic lasers

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