Bistable operation of a two-section 1.3 μm InAs quantum dot laser-absorption saturation and the quantum confined Stark effect

Huang, Xiaodong; Stintz, A.; Li, Hua; Rice, A. K.; Liu, G.T.; Lester, Lianne; Cheng, Julian; Malloy, Matthew

doi:10.1109/3.910451

Cited by 65 publications

(11 citation statements)

References 19 publications

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“…For wavelengths below the gain peak the switch on of the laser with feedback is abrupt and shows a pronounced hysteresis, whereas the light-current characteristics (LI curve) is continuous and smooth for wavelengths higher than the gain peak and the free-running lasers. Again, optical bistability in quantum dot lasers is usually associated with two-section (i.e., gain and saturable absorption sections) laser structures displaying amplitude [5,20] or wavelength [21] bistability. The bistable operation has important applications in optical switching and modulation and is also well known for quantum well lasers [22].…”

Section: Introductionmentioning

confidence: 99%

Low-frequency self-pulsing in single-section quantum-dot laser diodes and its relation to optothermal pulsations

Tierno

Radwell

Ackemann³

2011

Phys. Rev. A

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Self-sustained pulsations in the output of an InAs quantum dot laser diode in the MHz range are reported. The characteristics (shape, range, and frequency) are presented for the free-running laser and when optical feedback in the Littrow configuration is applied. Bistability in the light-current characteristics is observed for operating wavelengths smaller than the gain peak, but it is not present for wavelengths above the gain peak and for the free-running laser, except at elevated temperatures. The temporal evolution of the envelopes of the optical spectra is very different for operation below, around, and above the gain peak, which might be related to a change of phase-amplitude coupling across the gain maximum, in agreement with the expectation for a two-level system. The time scale and the bifurcation scenario, supported by an initial blueshift of the emission wavelength of each longitudinal mode in time-resolved optical spectra, suggests that these are optothermal pulsations similar to those reported in quantum well amplifiers [Phys. Rev. E 68, 036209 (2003)]. The mechanism of pulsation seems to be a destabilization of bistable states (due to saturable absorption in the beam wings) by a slow thermal change in the waveguiding properties

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Section: Introductionmentioning

confidence: 99%

Low-frequency self-pulsing in single-section quantum-dot laser diodes and its relation to optothermal pulsations

Tierno

Radwell

Ackemann³

2011

Phys. Rev. A

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“…The nonlinear absorption saturation along with electroabsorption induced by quantum confined Stark effect play major role in formation bistability [14].…”

Section: Discussionmentioning

confidence: 99%

“…It does open new doors for the development of multi-wavelength ultrafast devices for nonlinear frequency conversion, flip-flop memory switches, dual-wavelength microscopy modalities (CARS, STED), time-domain spectroscopy and wavelengthdivision multiplexing [9][10][11][12]. Continuous-wave (CW) bistability in the light-current (L-I) characteristics and self-pulsation in quantum-dot lasers may occur with increase current to the gain section and explained by nonlinear saturation of the quantum-dot absorption and electroabsorption induced by the quantum confined Stark effect [13][14]. Wavelength bistability was observed in distributed feedback laser in continuous-wave (CW) [15] as well as in vertical-cavity semiconductor optical amplifiers [16].…”

Section: Introductionmentioning

confidence: 99%

High-Power Wavelength Bistability and Tunability in Passively Mode-Locked Quantum-Dot Laser

Nikitichev

Cataluna

Fedorova

et al. 2013

IEEE J. Select. Topics Quantum Electron.

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Wavelength bistability and tunability are demonstrated in a two-section quantum-dot mode-locked laser with a non-identical capping layer structure. The continuous wave output power of 30 mW (25 mW) and mode-locked average power of 27 mW (20 mW) are achieved for 1245 nm (1295 nm) wavelengths respectively under the injection current of 300 mA. The largest switching range of more than 50 nm and wavelength tuning range with picosecond pulses and stable lasing wavelengths between 1245 nm and 1295 nm are demonstrated for gain current of 300 mA and 330 mA.

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“…The hysteresis loop width also increases with the increase in the SA section voltage bias, which results from the large difference between the unsaturated and saturated loss of the absorber under higher reverse bias. 17 The series resistances of the samples are around 2.5 X. Under the investigated current range, the lasers operated with ground state lasing; no excited state lasing was observed.…”

mentioning

confidence: 90%

Monolithic 9 GHz passively mode locked quantum dot lasers directly grown on on-axis (001) Si

Liu

Norman

Jung

et al. 2018

Applied Physics Letters

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Optical frequency comb direct generation on silicon by mode locked lasers (MLLs) is promising as it offers high wavelength channel counts and ultrashort pulses that will benefit future large-scale high capacity silicon photonic integrated circuits. Here, we demonstrate two-section quantum dot (QD) MLLs that are directly grown on a complementary metal–oxide–semiconductor compatible on-axis (001) silicon substrate by employing molecular beam epitaxy. The lasers, incorporating five layers of InAs QDs, operate in the O-band wavelength range with a pulse repetition rate around 9 GHz. A pulsewidth reduction of 48% of the narrowest achievable pulse from each QD MLL is obtained when the saturable absorber (SA) section length ratio is increased from 8% to 23%. The device with the longest SA section exhibits a more than 50 dB fundamental RF peak signal to noise floor ratio with 1.3 ps pulses.

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Bistable operation of a two-section 1.3 μm InAs quantum dot laser-absorption saturation and the quantum confined Stark effect

Cited by 65 publications

References 19 publications

Low-frequency self-pulsing in single-section quantum-dot laser diodes and its relation to optothermal pulsations

Low-frequency self-pulsing in single-section quantum-dot laser diodes and its relation to optothermal pulsations

High-Power Wavelength Bistability and Tunability in Passively Mode-Locked Quantum-Dot Laser

Monolithic 9 GHz passively mode locked quantum dot lasers directly grown on on-axis (001) Si

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