A comparative study on chirped-pulse upconversion and direct multichannel MCT detection

Knorr, Johannes; Rudolf, Philipp; Nuernberger, Patrick

doi:10.1364/oe.21.030693

Cited by 16 publications

(17 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In previous visible-light-pump and MIR-probe experiments, the bandwidths are narrow [9,28]. In contrast, the bandwidth of our probe pulse is so broad that the entire free-carrier behavior predicted by the Drude model could be experimentally visualized.…”

Section: Resultsmentioning

confidence: 68%

Ultrabroadband Midinfrared Pump-Probe Spectroscopy Using Chirped-Pulse Up-conversion in Gases

et al. 2015

View full text Add to dashboard Cite

We demonstrate ultrabroadband and ultrafast midinfrared (MIR) pump-probe spectroscopy by employing the chirped-pulse up-conversion technique with four-wave difference-frequency generation in a gas. The full spectra of the MIR probe pulses, which spread from 200 to 5000 cm −1 , are recorded on a singleshot basis. We apply this MIR pump-probe spectroscopy to measure the ultrafast carrier dynamics of an intrinsic germanium crystal wafer. Ultrafast reflectivity change induced by the excitation of carriers is observed in the region from far to near infrared. The behavior of the reflectivity-change signals at each delay time is explained by the Drude model.

show abstract

Section: Resultsmentioning

confidence: 68%

Ultrabroadband Midinfrared Pump-Probe Spectroscopy Using Chirped-Pulse Up-conversion in Gases

et al. 2015

View full text Add to dashboard Cite

show abstract

“…From late 1970's, parametric upconversion is used for time gating application by utilising the fact that the upconversion takes place only when both the pump and the IR fields temporally overlap inside the χ (2) nonlinear medium [209]. This upconversion time gating is primarily explored for studying transient phenomena like fluorescence characterization [210]- [212] and ultrafast time-resolved spectroscopy [54], [124], [165], [213], and been used for detecting objects embedded in scattering media [201], [214] and even for temporal characterization at single-photon level [215], [216]. There are only a few reported results, where time gating is combined with spatial imaging for characterizing transient phenomena of a 2-D object [136], [217].…”

Section: Discussionmentioning

confidence: 99%

“…few mK to K). Researchers have compared the sensitivity of upconversion detectors with direct detectors at different IR operating wavelengths [44], [50]- [54], however, upconversion detectors are still to be optimized for a given application to reach optimal performance.…”

mentioning

confidence: 99%

Parametric upconversion imaging and its applications

Barh¹,

Rodrigo²,

Meng³

et al. 2019

Adv. Opt. Photon.

View full text Add to dashboard Cite

This article provides an extensive survey of nonlinear parametric upconversion infrared (IR) imaging, starting from its origin to date. Upconversion imaging is a successful innovative technique for IR imaging in terms of sensitivity, speed, and noise performance. In this approach, the IR image is frequency upconverted to form a visible/near-IR image through parametric three-wave mixing followed by detection using a silicon-based detector or camera. In 1968 (50 years back), J. E. Midwinter first demonstrated upconversion imaging from shortwave-IR (1.6 μm) to visible (484 nm) wavelength using a bulk lithium niobate crystal. This technique quickly gained interest, and several other groups demonstrated upconversion imaging further into the mid-and far-IR with significantly improved quantum efficiency. Although a few excellent reviews on upconversion imaging were published in the early 1970's, the rapid progress in recent years merits an updated comprehensive review. The topic includes linear imaging, nonlinear optics, and laser science, and has shown diverse applications. The scope of this article is to provide an in-depth knowledge of upconversion imaging theory. An overview of different phase matching conditions for the parametric process and the sensitivity of the upconversion detection system are discussed. Furthermore, different design considerations and optimization schemes are outlined for application-specific upconversion imaging. The article comprises a historical perspective of the technique, its most recent technological advances, specific outstanding issues, and some cutting-edge applications of upconversion in IR imaging.

show abstract

“…Several groups demonstrated single-shot detection of the MIR supercontinuum by the use of chirped-pulse upconversion (CPU) with solid crystals [8,[18][19][20][21]. Although it is possible to have efficient frequency conversion with solid crystals, the bandwidth of the detection is still limited to ∼600 cm −1 by the phase-matching condition.…”

Section: Chirped Pulse Upconversionmentioning

confidence: 99%

Development and Application of Sub-Cycle Mid-Infrared Source Based on Laser Filamentation

Fuji¹,

Shirai²,

Nomura³

2017

Applied Sciences

View full text Add to dashboard Cite

This paper is a perspective article which summarizes the development and application of sub-cycle mid-infrared (MIR) pulses generated through a laser filament. The generation scheme was published in Applied Sciences in 2013. The spectrum of the MIR pulse spreads from 2 to 50 µm, corresponding to multiple octaves, and the pulse duration is 6.9 fs, namely, 0.63 times the period of the carrier wavelength, 3.3 µm. The extremely broadband and highly coherent light source has potential for various applications. The light source has been applied for advanced ultrafast pump-probe spectroscopy by several research groups. As another application example, single-shot detection of absorption spectra in the entire MIR range by the use of chirped-pulse upconversion with a gas medium has been demonstrated. Although the measurement of the field oscillation of the sub-cycle MIR pulse was not trivial, the waveform of the sub-cycle pulse has been completely characterized with a newly developed method, frequency-resolved optical gating capable of carrier-envelope phase determination. A particular behavior of the spectral phase of the sub-cycle pulse has been revealed through the waveform characterization.

show abstract

A comparative study on chirped-pulse upconversion and direct multichannel MCT detection

Cited by 16 publications

References 39 publications

Ultrabroadband Midinfrared Pump-Probe Spectroscopy Using Chirped-Pulse Up-conversion in Gases

Ultrabroadband Midinfrared Pump-Probe Spectroscopy Using Chirped-Pulse Up-conversion in Gases

Parametric upconversion imaging and its applications

Development and Application of Sub-Cycle Mid-Infrared Source Based on Laser Filamentation

Contact Info

Product

Resources

About