Uni-Traveling Carrier Photodiodes: Development and Prospects

Autor:	Hiroshi Ito, Tadao Ishibashi
Rok vydání:	2022
Předmět:	Physics Field (physics) Monte Carlo method Linearity Electron Space charge Atomic and Molecular Physics and Optics Computational physics Photodiode law.invention law Electrical and Electronic Engineering Current (fluid) Scaling
Zdroj:	IEEE Journal of Selected Topics in Quantum Electronics. 28:1-6
ISSN:	1558-4542 1077-260X
DOI:	10.1109/jstqe.2021.3123383
Popis:	The development of uni-traveling carrier photodiodes over the past 25 years is briefly reviewed and the key design parameters in their structure are discussed. Monte Carlo simulation run for minority electrons in a p-type InGaAs structure reveals how they leave the absorber. This shows the very diffusive nature of electrons, even in a moderately high quasi-field. Output linearity is carefully verified based on experimental THz-wave output vs. operation current. The first stage of saturation prior to severe field collapse is shown to be ruled by space charge density linearly changing with operation current. In the scaling down of a UTC-PD for faster operations, the space-charge effect is not significant, but junction self-heating is a factor imposing limitations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1f4b6f2855aa9808e2625bf7924ba6c1 https://doi.org/10.1109/jstqe.2021.3123383 Zobrazit plný text záznamu