Picosecond all-optical switching using tunneling and spin-relaxation in quantum well structures

Atsushi Tackeuchi, Yuji Nishikawa, Shunichi Muto, Osamu Wada

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We propose and demonstrate two approaches for controlling the recovery time from excitonic absorption bleaching. Each approach has a new feature that the recovery time of optical nonlinearity is controlled by the tunneling or the spin-relaxation effect in quantum well structures. In the tunneling bi-quantum well structure utilizing the tunneling effect, the recovery time is reduced to the picosecond region with the reduction of tunneling barrier thickness. The recovery time is three orders of magnitude shorter than the nanosecond recovery of conventional multiple quantum wells (MQW). The spin relaxation of MQW has been shown to be as fast as several tens of picoseconds. The all-optical gate operations of a Fabry-Perot etalon are demonstrated with a full signal recovery of 17 ps using tunneling and 7-ps recovery using spin relaxation.

Original languageEnglish
Pages (from-to)561-574
Number of pages14
JournalOptoelectronics - Devices and Technologies
Volume10
Issue number4
Publication statusPublished - 1995 Dec
Externally publishedYes

Fingerprint

Semiconductor quantum wells
Recovery
Bleaching

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Picosecond all-optical switching using tunneling and spin-relaxation in quantum well structures. / Tackeuchi, Atsushi; Nishikawa, Yuji; Muto, Shunichi; Wada, Osamu.

In: Optoelectronics - Devices and Technologies, Vol. 10, No. 4, 12.1995, p. 561-574.

Research output: Contribution to journalArticle

@article{b7ee24471e3a463881fa72595fe62c4e,
title = "Picosecond all-optical switching using tunneling and spin-relaxation in quantum well structures",
abstract = "We propose and demonstrate two approaches for controlling the recovery time from excitonic absorption bleaching. Each approach has a new feature that the recovery time of optical nonlinearity is controlled by the tunneling or the spin-relaxation effect in quantum well structures. In the tunneling bi-quantum well structure utilizing the tunneling effect, the recovery time is reduced to the picosecond region with the reduction of tunneling barrier thickness. The recovery time is three orders of magnitude shorter than the nanosecond recovery of conventional multiple quantum wells (MQW). The spin relaxation of MQW has been shown to be as fast as several tens of picoseconds. The all-optical gate operations of a Fabry-Perot etalon are demonstrated with a full signal recovery of 17 ps using tunneling and 7-ps recovery using spin relaxation.",
author = "Atsushi Tackeuchi and Yuji Nishikawa and Shunichi Muto and Osamu Wada",
year = "1995",
month = "12",
language = "English",
volume = "10",
pages = "561--574",
journal = "Optoelectronics - Devices and Technologies",
issn = "0912-5434",
publisher = "Mita Press",
number = "4",

}

TY - JOUR

T1 - Picosecond all-optical switching using tunneling and spin-relaxation in quantum well structures

AU - Tackeuchi, Atsushi

AU - Nishikawa, Yuji

AU - Muto, Shunichi

AU - Wada, Osamu

PY - 1995/12

Y1 - 1995/12

N2 - We propose and demonstrate two approaches for controlling the recovery time from excitonic absorption bleaching. Each approach has a new feature that the recovery time of optical nonlinearity is controlled by the tunneling or the spin-relaxation effect in quantum well structures. In the tunneling bi-quantum well structure utilizing the tunneling effect, the recovery time is reduced to the picosecond region with the reduction of tunneling barrier thickness. The recovery time is three orders of magnitude shorter than the nanosecond recovery of conventional multiple quantum wells (MQW). The spin relaxation of MQW has been shown to be as fast as several tens of picoseconds. The all-optical gate operations of a Fabry-Perot etalon are demonstrated with a full signal recovery of 17 ps using tunneling and 7-ps recovery using spin relaxation.

AB - We propose and demonstrate two approaches for controlling the recovery time from excitonic absorption bleaching. Each approach has a new feature that the recovery time of optical nonlinearity is controlled by the tunneling or the spin-relaxation effect in quantum well structures. In the tunneling bi-quantum well structure utilizing the tunneling effect, the recovery time is reduced to the picosecond region with the reduction of tunneling barrier thickness. The recovery time is three orders of magnitude shorter than the nanosecond recovery of conventional multiple quantum wells (MQW). The spin relaxation of MQW has been shown to be as fast as several tens of picoseconds. The all-optical gate operations of a Fabry-Perot etalon are demonstrated with a full signal recovery of 17 ps using tunneling and 7-ps recovery using spin relaxation.

UR - http://www.scopus.com/inward/record.url?scp=0029511914&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029511914&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029511914

VL - 10

SP - 561

EP - 574

JO - Optoelectronics - Devices and Technologies

JF - Optoelectronics - Devices and Technologies

SN - 0912-5434

IS - 4

ER -