We report on the observation of a dynamical thermal effect in InGaAsP microtubes at telecom wavelengths. The microtubes are fabricated by releasing a strained semiconductor bilayer and are picked up by abruptly tapered optical fibers for subsequent coupling with adiabatically tapered optical fibers. As a result of absorption by InAs quantum dots embedded in the tube structure, these microtubes show dynamical thermal effects at wavelengths around 1525 nm and 1578 nm, while they are passive at longer wavelengths near 1634 nm. The photon absorption induced thermal effect is visualized by generating a pair of microbottles. The dynamical thermal effect can be avoided or exploited for passive or active applications by utilizing appropriate resonance wavelengths.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: March 26, 2012
Manuscript Accepted: May 4, 2012
Published: June 26, 2012
Zhaobing Tian, Pablo Bianucci, Philip J. R. Roche, M. Hadi Tavakoli Dastjerdi, Zetian Mi, Philip J. Poole, Andrew G. Kirk, and David V. Plant, "Dynamical thermal effects in InGaAsP microtubes at telecom wavelengths," Opt. Lett. 37, 2712-2714 (2012)
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