School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Opt Lett. 2011 Jun 15;36(12):2372-4. doi: 10.1364/OL.36.002372.
We demonstrate a novel (to our knowledge) method for high sensitivity measurement of pulsed light at the telecommunication wavelength of 1558 nm using a GaAsP photomultiplier tube. By modulating the input power and analyzing the harmonic components, high sensitivity third-order autocorrelation is obtained in the wavelength and power regimes where a mixture of two-photon absorption and three-photon absorption in the photomultiplier tube is present.
我们展示了一种新颖的（据我们所知）方法，用于使用 GaAsP 光电倍增管在电信波长 1558nm 下对脉冲光进行高灵敏度测量。通过调制输入功率并分析谐波分量，在光电倍增管中存在双光子吸收和三光子吸收混合的波长和功率范围内，获得了高灵敏度的三阶自相关。
