Soliton-like pulse shaping mechanism in passively mode-locked surface-emitting semiconductor lasers

Paschotta, Rüdiger; Häring, R.; Garnache, A.; Hoogland, Sjoerd; Tropper, A.C.; Keller, U.

doi:10.1109/cleoe.2003.1312191

Cited by 35 publications

(50 citation statements)

References 3 publications

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“…Here in this paper we discuss the influence of the field enhancement on the gain to optimize the modelocking performance towards shorter pulse durations and higher output powers. Especially the strong gain saturation needs to be investigated in detail as the pulse formation mechanism in a SESAM-modelocked VECSEL is governed by strong dynamic gain and absorber saturation [17,18]. Therefore, we present the first detailed measurement of emission bandwidth, smallsignal gain and gain saturation of EP-VECSELs as function of field enhancement.…”

Section: Introductionmentioning

confidence: 99%

Gain characterization and passive modelocking of electrically pumped VECSELs

Pallmann¹,

Zaugg²,

Mangold³

et al. 2012

Opt. Express

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Linear and nonlinear gain characterization of electrically pumped vertical external cavity surface emitting lasers (EP-VECSELs) is presented with spectrally resolved measurements of the gain and with gain saturation measurements of two EP-VECSEL samples with different field enhancement in the quantum-well gain layers. The spectral bandwidth, small-signal gain and saturation fluence of the devices are compared. Using the sample with the larger bandwidth, we have demonstrated the shortest pulses generated from a passively modelocked EP-VECSEL to date. With a low-saturation-fluence SESAM for passive modelocking we have achieved 9.5-ps pulses with 7.6 mW average output power at a repetition rate of 1.4 GHz. With a higher output coupler transmission the pulse duration was increased to 31 ps with an average output power of 13.6 mW. The pulses were chirped mainly due to the group delay dispersion (GDD) introduced by the intermediate DBR, which compensates the optical loss in the structure.

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Section: Introductionmentioning

confidence: 99%

Gain characterization and passive modelocking of electrically pumped VECSELs

Pallmann¹,

Zaugg²,

Mangold³

et al. 2012

Opt. Express

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“…We expect that such a QD-VECSEL will be power-scalable to several watts in analogy to QWVECSELs. We would expect that a faster QD-SESAM and better dispersion management [21,22] will ultimately result in shorter pulse durations.…”

Section: Resultsmentioning

confidence: 99%

Modelocked quantum dot vertical external cavity surface emitting laser

et al. 2008

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We report the first successful modelocking of a vertical external cavity surface emitting laser (VECSEL) with a quantum dot (QD) gain region. The VECSEL has a total of 35 QD-layers with an emission wavelength of about 1060 nm. In SESAM modelocked operation, we obtain an average output power of 27.4 mW with 18-ps pulses at a repetition rate of 2.57 GHz. This QD-VECSEL is used asgrown on a 450 µm thick substrate, which limits the average output power.

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“…A specific investigation of damage and lifetime of SESAMs designed for high-power oscillators is therefore crucial. Previous investigations on optimized SESAM designs mostly focused on the realization of low saturation fluences [40,41], which is key for high repetition rates and stable modelocking of semiconductor lasers [34]. A recent investigation carried out in the context of high-energy modelocked TDLs focused on studying the influence of nitrogen incorporation on the carrier dynamics of SESAMs, but damage was not investigated [42].…”

Section: Sesams In High-power Ultrafast Oscillatorsmentioning

confidence: 99%

“…In order to compensate for this phase shift and obtain stable soliton modelocking, large amounts of negative GDD are required. If this phase shift becomes excessive (typically larger than some hundred mrad), modelocked operation is destabilized [28,34] ). Therefore, replacing the air in the cavity by helium enabled the demonstration of the 10 µJ pulse energy milestone in 2008.…”

Section: Oc Sesammentioning

confidence: 99%

Cutting-Edge High-Power Ultrafast Thin Disk Oscillators

et al. 2013

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A growing number of applications in science and industry are currently pushing the development of ultrafast laser technologies that enable high average powers. SESAM modelocked thin disk lasers (TDLs) currently achieve higher pulse energies and average powers than any other ultrafast oscillator technology, making them excellent candidates in this goal. Recently, 275 W of average power with a pulse duration of 583 fs were demonstrated, which represents the highest average power so far demonstrated from an ultrafast oscillator. In terms of pulse energy, TDLs reach more than 40 μJ pulses directly from the oscillator. In addition, another major milestone was recently achieved, with the demonstration of a TDL with nearly bandwidth-limited 96-fs long pulses. The progress achieved in terms of pulse duration of such sources enabled the first measurement of the carrier-envelope offset frequency of a modelocked TDL, which is the first key step towards full stabilization of such a source. We will present the key elements that enabled these latest results, as well as an outlook towards the next scaling steps in average power, pulse OPEN ACCESSAppl. Sci. 2013, 3 356 energy and pulse duration of such sources. These cutting-edge sources will enable exciting new applications, and open the door to further extending the current performance milestones.

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Soliton-like pulse shaping mechanism in passively mode-locked surface-emitting semiconductor lasers

Cited by 35 publications

References 3 publications

Gain characterization and passive modelocking of electrically pumped VECSELs

Gain characterization and passive modelocking of electrically pumped VECSELs

Modelocked quantum dot vertical external cavity surface emitting laser

Cutting-Edge High-Power Ultrafast Thin Disk Oscillators

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