Time-response characteristics of a GaAs/AlGaAs modulation-doped Schottky photodetector

Authors

  • Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Carlo Alonzo ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Alipio Garcia ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

The time response of a GaAs/AlGaAs modulationdoped schottky photodetector is studied using a mode-locked ~100-fs pulsed laser. The device was mounted on a needle probe assembly and the unbiased photocurrent is measured with a 20 GHz oscilloscope. The instrument-limited transient response is 34 ps. For an average incident power of 20 mW, the estimated quantum efficiency at 8400 Å is 0.0117 A/W.

SPP 2004 Proceedings Cover

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Published

2004-10-25

Issue

2004: Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress

Section

Plenary Sessions

Copyright Information

© 2004 Elmer Estacio, Carlo Alonzo, Alipio Garcia, Armando Somintac, Arnel Salvador
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How to Cite

[1]
E Estacio, C Alonzo, A Garcia, A Somintac, and A Salvador, Time-response characteristics of a GaAs/AlGaAs modulation-doped Schottky photodetector, in Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress (Philippines, 2004), SPP-2004-PR-04. URL: https://proceedings.spp-online.org/article/view/SPP-2004-PR-04
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