Measurement of the anisotropy of two-photon absorption coefficients in zincblende semiconductors

Dvorak, Mark D.; Schroeder, W. Andreas; Andersen, David R.; Smirl, Arthur L.; Wherrett, B. S.

doi:10.1109/3.283768

Cited by 110 publications

(83 citation statements)

References 64 publications

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“…The polarization dependence of the TPA coefficient is dependant on the crystalline orientation of the material [12]. The polarization dependence of TPA in (001) GaAs at 950 nm has been previously reported in [13]. As a linear polarization is rotated through 360 degrees, the TPA dependence is periodic, with a period of 90 degrees, and a variation of approximately 27 % in the TPA coefficient (β).…”

Section: Introductionmentioning

confidence: 98%

Polarization dependence of a GaAs-based two-photon absorption microcavity photodetector

Dowd¹,

Guo²,

Flood³

et al. 2008

Opt. Express

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Abstract:In this paper, the polarization response of a GaAs based twophoton absorption microcavity photodetector has been studied. The deviation in the dependence of the detector response from that of bulk GaAs is shown to be due to the birefringence of the cavity. A theoretical model based on the convolution of the cavity birefringence and the polarization dependence of two-photon absorption in GaAs is described and shown to match the measured polarization dependence of the microcavity detector very well.

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Section: Introductionmentioning

confidence: 98%

Polarization dependence of a GaAs-based two-photon absorption microcavity photodetector

Dowd¹,

Guo²,

Flood³

et al. 2008

Opt. Express

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“…It should be noted that the TPA process occurring in GaAs material is polarization sensitive [20]. This polarization dependence is further intensified by the employment of a resonance cavity structure.…”

Section: Tpa Microcavitymentioning

confidence: 99%

Chromatic Dispersion Monitoring for High-Speed WDM Systems Using Two-Photon Absorption in a Semiconductor Microcavity

Bondarczuk¹,

Maguire²,

Reid³

et al. 2009

IEEE J. Quantum Electron.

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Abstract-This paper presents a theoretical and experimental investigation into the use of a two-photon absorption (TPA) photodetector for use in chromatic dispersion (CD) monitoring in highspeed, WDM network. In order to overcome the inefficiency associated with the nonlinear optical-to-electrical TPA process, a microcavity structure is employed. An interesting feature of such a solution is the fact that the microcavity enhances only a narrow wavelength range determined by device design and angle at which the signal enters the device. Thus, a single device can be used to monitor a number of different wavelength channels without the need for additional external filters. When using a nonlinear photodetector, the photocurrent generated for Gaussian pulses is inversely related to the pulsewidth. However, when using a microcavity structure, the cavity bandwidth also needs to be considered, as does the shape of the optical pulses incident on the device. Simulation results are presented for a variety of cavity bandwidths, pulse shapes and durations, and spacing between adjacent wavelength channels. These results are verified experimental using a microcavity with a bandwidth of 260 GHz (2.1 nm) at normal incident angle, with the incident signal comprising of two wavelength channels separated by 1.25 THz (10 nm), each operating at an aggregate data rate of 160 Gb/s. The results demonstrate the applicability of the presented technique to monitor accumulated dispersion fluctuations in a range of 3 ps/nm for 160 Gb/s RZ data channel.

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“…(19) and (20) in Ref. [33]). This contribution, however, is eliminated, together with the associated highfrequency oscillation by the Fourier-transform filtering applied in the next step.…”

Section: B Laser Sourcementioning

confidence: 99%

Polarization time of unpolarized light

Shevchenko¹,

Roussey²,

Friberg³

et al. 2017

Optica

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Light produced by most natural and artificial sources is unpolarized or partially polarized. At any instant of time, however, such random light can be regarded as fully polarized, but the polarization state may vary drastically within short time intervals. This rate of change is another attribute that separates one unpolarized beam from another. Here, we study such polarization dynamics and, for the first time to our knowledge, measure the characteristic time, called the polarization time, in which the instantaneous polarization state stays essentially unaltered. The technique employs a polarization-sensitive Michelson interferometer and two-photon absorption detection valid for electromagnetic light, yielding superior femtosecond time resolution. We analyze two unpolarized light sources: amplified spontaneous emission from a fiber amplifier and a dual-wavelength laser source. The characterization of polarization dynamics can have significant applications in optical sensing, polarimetry, telecommunication, and astronomy, as well as in quantum and atom optics.

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Measurement of the anisotropy of two-photon absorption coefficients in zincblende semiconductors

Cited by 110 publications

References 64 publications

Polarization dependence of a GaAs-based two-photon absorption microcavity photodetector

Polarization dependence of a GaAs-based two-photon absorption microcavity photodetector

Chromatic Dispersion Monitoring for High-Speed WDM Systems Using Two-Photon Absorption in a Semiconductor Microcavity

Polarization time of unpolarized light

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