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报道一种ZnSSe双光子吸收光电二极管的新型飞秒自相关器 ,其工作波长覆盖 40 0～ 80 0nm的极宽光谱范围。用对紫外波长更为敏感的ZnMgS双光子吸收光电二极管 ,可延伸自相关器的工作波长至短于 40 0nm的紫外波段。
A new type of femtosecond auto-correlator for ZnSSe two-photon absorption photodiode is reported. Its operating wavelength covers a very broad spectral range of 40 0 ~ 80 0 nm. With ZnMgS two-photon absorption photodiodes that are more sensitive to ultraviolet wavelengths, the working wavelength of the autocorrelator can be extended to ultraviolet wavelengths shorter than 40 0 nm.