Frequency response of multilayer avalanche photodiodes: structural effects

Jorge M. T. Pereira

doi:10.1117/12.467675

21 May 2002 Frequency response of multilayer avalanche photodiodes: structural effects

Jorge M. T. Pereira

Proceedings Volume 4650, Photodetector Materials and Devices VII; (2002) https://doi.org/10.1117/12.467675
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

Abstract

The frequency response of SAM-APD devices is calculated from the response of each layer using matrix algebra. Most of the results apply to devices with absorption region of InGaAs and avalanche region of InP and they assume uniform carrier ionization coefficients and velocities. The effect of the width of each layer, carrier ionization ratio and velocities on the multilayer structure frequency response has been investigated. A change of the absorption region width changes the 3-dB bandwidth at low avalanche gains whereas a change in the avalanche region width only affects the frequency response at high avalanche gains. When the ionization ratio decreases an increase of the 3-dB bandwidth is observed at high avalanche gains. The frequency response seems to be very sensitive to the carrier velocities mainly the hole velocity. In order to include the strong dependence of the ionization coefficients on the electrical field, the avalanche region was modeled piecewise uniform by breaking it into three layers. The frequency response of this structure is seen to be similar to the one obtained when uniform ionization coefficients are considered assuming they are assigned the mean value of the corresponding ionization coefficients in the three layers.

Citation Download Citation

Jorge M. T. Pereira "Frequency response of multilayer avalanche photodiodes: structural effects", Proc. SPIE 4650, Photodetector Materials and Devices VII, (21 May 2002); https://doi.org/10.1117/12.467675

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available