Ultrashort, nonlinear, optical time response of Fe-doped InGaAs/InP multiple quantum wells in 1.55-μm range

Abstract

Articles you may be interested in290 fs switching time of Fe-doped quantum well saturable absorbers in a microcavity in 1.55 μ m range Appl. Phys. Lett. 85, 5926 (2004); 10.1063/1.1804239 Nonlinear absorption temporal dynamics of Fe-doped GaInAs/InP multiple quantum wells J. Appl. Phys. 94, 2355 (2003); 10.1063/1.1591077 High-speed 1.55 μm Fe-doped multiple-quantum-well saturable absorber on InP Appl. Phys. Lett. 78, 4065 (2001); 10.1063/1.1381410 Time-frequency spectroscopy of an InGaAs/InP quantum-well exciton Bragg reflector Appl. Phys. Lett. 74, 2569 (1999); 10.1063/1.123900 Carrier lifetime and exciton saturation in a strain-balanced InGaAs/InAsP multiple quantum well

Electronic surface states and dielectric self-energy profiles in colloidal nanoscale platelets of CdSe

“…3 Electrical and optical injection of carriers, emission wavelength tuning, semiconductor alloying for electrical and optical confinements, etching techniques as well as doping, are necessary for numerous applications ranging from light emission, light detection, photovoltaics, high-speed nonlinear optical telecommunications, to mid-infrared sensing. [1][2][3][4][5][6][7] Free standing colloidal nanoplatelets (CNPL) have recently emerged as a novel class of semiconductor nanostructures with two-dimensional electronic structures. These new nano-objects have attracted increasing interest thanks to their ease of synthesis, opening new routes for low-cost technologies.…”

Highlighting excitonic optical properties of bundled carbon nanotubes to tailor efficient saturable absorbers

“…The precise control of this recovery time with incorporated iron doping method has already been demonstrated [25]. Excitonic resonance peak of QW at 1.59 µm has been measured by Fourier-transformed infrared spectroscopy [9]. [26] for a complete description of differential transmission).…”

“…Then, we estimate first VHTE in the wavelengths range from 1.13 to 1.77 µm, according to Kataura plot [15,17], as narrowest expected wavelength window of resonant SWNT. This part of SWNT diameter distribution lead to an expected useful distribution of FOTE, matching telecom window near 1.55 µm, where excitonic optical transition of QW has already been exploited [8,9].…”

“…The excitation source is a titanium-sapphire mode-locked laser, providing 80-fs pulses at 810 nm, with 82-MHz. This mode-locked laser pumps an optical parametric oscillator which generates 130-fs pulses at the same repetition rate, with a tunable wavelength from 1.35 to 1.60 µm, in the telecom wavelengths range (see [9] for details of pumpprobe experiment).…”

“…However, fabrication of these ultrafast 2D-nanostructures-based SA need complex and expensive techniques. Briefly, these nanostructures are commonly grown by molecular beam epitaxy, and, in-situ QW-doping [9] or ex-situ QWirradiation [10] techniques are required to reduce typical nanosecond QW nanostructures absorption recovery time down to subpicosecond range. This latter range is indeed necessary for high-bit-rate signal regeneration.…”