Optically Triggered Infrared Photodetector
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- 作者：脥帽igo Ramiro ; Antonio Mart铆 ; Elisa Antol铆n ; Esther L贸pez ; Alejandro Datas ; Antonio Luque ; Jos茅 M. Ripalda ; Yolanda Gonz谩lez
- 刊名：Nano Letters
- 出版年：2015
- 出版时间：January 14, 2015
- 年：2015
- 卷：15
- 期：1
- 页码：224-228
- 全文大小：301K
- ISSN：1530-6992
文摘
We demonstrate a new class of semiconductor device: the optically triggered infrared photodetector (OTIP). This photodetector is based on a new physical principle that allows the detection of infrared light to be switched ON and OFF by means of an external light. Our experimental device, fabricated using InAs/AlGaAs quantum-dot technology, demonstrates normal incidence infrared detection in the 2鈥? 渭m range. The detection is optically triggered by a 590 nm light-emitting diode. Furthermore, the detection gain is achieved in our device without an increase of the noise level. The novel characteristics of OTIPs open up new possibilities for third generation infrared imaging systems (ntrib-group>Rogalskin class="NLM_x">, n>A.n class="NLM_x">; n>Antoszewskin class="NLM_x">, n>J.n class="NLM_x">; n>Faraonen class="NLM_x">, n>L. ntrib-group> J. Appl. Phys.n class="NLM_x"> n>2009n class="NLM_x">, n>105n class="NLM_x"> ( n>9), 091101).