Generation of subpicosecond infrared pulses tunable between 5.2 μm and 18 μm at a repetition rate of 76 MHz

Ehret, S.; Schneider, Harald

doi:10.1007/s003400050352

Cited by 59 publications

(24 citation statements)

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“…They are produced in a nonlinear crystal by difference frequency generation of two output beams of an optical parametric oscillator which is pumped by a mode-locked Ti:sapphire laser [14]. The wavelength is tunable between 6 and 18 lm and was set to match the peak detection wavelength of the two-photon QWIPs.…”

Section: Autocorrelationmentioning

confidence: 99%

Two-photon QWIPs for quadratic detection of weak mid-infrared laser pulses

Maier

Schneider

Liu

et al. 2005

Infrared Physics & Technology

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Section: Autocorrelationmentioning

confidence: 99%

Two-photon QWIPs for quadratic detection of weak mid-infrared laser pulses

Maier

Schneider

Liu

et al. 2005

Infrared Physics & Technology

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“…Additionally, LiSe has been used for DFG to generate nanojoules level ener-515 gies tuneable from 5 to 12 µm, and up to 17 µm with AGSe [164, 165,166]. With AGS and GaSe tunability between 5.2 to 18 µm tunability was demonstrated [167], illustrating the flexibility of the DFG approach. Intra-pulse DFG [168] alleviates all issues related to spatio-temporal overlap of the iterating pump and signal waves but requires driving pulses featuring 520 ultra-broad bandwidth.…”

Section: Difference-frequency Generationmentioning

confidence: 99%

Ultrashort pulse generation in the mid-IR

Pires

Baudisch

Sánchez

et al. 2015

Progress in Quantum Electronics

100

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Recent developments in laser sources operating in the mid-IR (3 -8 µm), have been motivated by the numerous possibilities for both fundamental and applied research. One example is the ability to unambiguously detect pollutants and carcinogens due to the much larger oscillator strengths of their absorption features in the mid-IR spectral region compared with the visible. Broadband sources are of particular interest for spectroscopic applications since they remove the need for arduous scanning or several lasers and allow simultaneous use of multiple absorption features thus increasing the confidence level of detection. In addition, sources capable of producing ultrashort and intense mid-IR radiation are gaining relevance in attoscience and strong-field physics due to wavelength scaling of re-collision based processes. In this paper we review the state-of-the-art in sources of coherent, pulsed mid-IR radiation. First we discuss semi-conductor based sources which are compact and turnkey, but typically do not yield short pulse duration. Mid-IR laser gain material based approaches will be discussed, either for direct broadband mid-IR lasers or as narrowband pump lasers for parametric amplification in nonlinear crystals. The main part will focus on mid-IR generation and amplification based on parametric frequency conversion, enabling highest mid-IR peak power pulses. Lastly we close with an overview of nonlinear post-compression techniques, for decreasing pulse duration to the sub-2-optical-cycle regime.

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“…5 The OPO is pumped by a modelocked-fs-Ti:Sapphire laser ( Ti ϭ810 nm) at a pulse repetition rate of 76 MHz. This frequency corresponds to a measurement window of rep ϭ13.3 ns.…”

mentioning

confidence: 99%