Infrared and Laser Engineering, Volume. 51, Issue 8, 20210761(2022)
Study on the time-resolved characteristics of the transmission-mode GaAs photocathode
Figures & Tables(7)
Fig. 1. Energy band diagram of traditional transmission-mode GaAs photocathode
Fig. 2. Curve of the photoelectron current density with time in GaAs photocathode with different electron diffusion coefficients
Fig. 3. Curve of the photoelectron current density with time in GaAs photocathode with different rear interface recombination rate
Fig. 4. Curve of the photoelectron current density with time in GaAs photocathode with different active layer thickness
Table 1. Correspondence table of GaAs photocathode response time and electron diffusion coefficient
View tableView in ArticleTable 1. Correspondence table of GaAs photocathode response time and electron diffusion coefficient
Item Value Dn/cm2·s−1 30 40 50 60 70 ΔT/ps 329 249 203 170 148
Table 2. Correspondence table of GaAs photocathode response time and rear interface recombination rate
View tableView in ArticleTable 2. Correspondence table of GaAs photocathode response time and rear interface recombination rate
Item Value Sv/cm·s−1 102 103 104 105 106 ΔT/ps 1354 845 313 203 191
Table 3. Correspondence table of GaAs photocathode response time and active layer thickness
View tableView in ArticleTable 3. Correspondence table of GaAs photocathode response time and active layer thickness
Item Value d/μm 2.5 2.0 1.5 1.0 0.5 ΔT/ps 533 360 203 90 23
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Ming Han, Xin Guo, Hongjin Qiu, Ruoyu Zhang, Tiantian Jia, Xuchuan Liu, Yixuan Hu. Study on the time-resolved characteristics of the transmission-mode GaAs photocathode[J]. Infrared and Laser Engineering, 2022, 51(8): 20210761
Paper Information
Category: Optical devices
Received: Oct. 18, 2021
Accepted: --
Published Online: Jan. 9, 2023
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