Quantum well saturable absorber mirror with electrical control of modulation depth

Xiaomin Liu, Edik U. Rafailov, Daniil Livshits, Dmitry Turchinovich

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate a quantum well (QW) semiconductor saturable absorber mirror (SESAM) comprising low-temperature grown InGaAs/GaAs QWs incorporated into a p-i-n structure. By applying the reverse bias voltage in the range 0–2 V to the p-i-n structure, we were able to change the SESAM modulation depth in the range 2.5–0.5%, as measured by nonlinear reflectivity of 450 fs long laser pulses with 1065 nm central wavelength, in the pump fluence range 1.6–26.7 μJ/cm2. This electrical control of the modulation depth is achieved by controlling the small-signal loss of the SESAM via quantum-confined Stark effect in the QWs.
Original languageEnglish
Article number051103
JournalApplied Physics Letters
Volume97
DOIs
Publication statusPublished - 2 Aug 2010

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