Over 4000 nm bandwidth of mid-IR supercontinuum generation in sub-centimeter segments of highly nonlinear tellurite PCFs

Domachuk, P.; Wolchover, Natalie; Cronin‐Golomb, Mark; Wang, A; George, A.K.; Cordeiro, Cristiano M. B.; Knight, Jonathan C.; Omenetto, Fiorenzo G.

doi:10.1364/oe.16.007161

Cited by 417 publications

(220 citation statements)

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“…Only redistribution of energy takes place over the bandwidth achieved. Furthermore, in the work of other groups, example, Domachuk et al 7 and Qin et. al.…”

Section: Fig 5 Pulse Evolution Through the Es -Pcf (Spectral Domain)mentioning

confidence: 97%

“…Also, the small transmission window of silica glasses (0.2-3 µm) limits the SC generation beyond this range. This limitation has attracted attention towards non -silica glasses such as lead -silicate 3 , fluoride 4 , chalcogenide 5 , and tellurite [6][7][8] glasses that have larger n 2 and some of which are transparent in the mid -infrared window.…”

Section: Introductionmentioning

confidence: 99%

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Ultrabroad supercontinuum generation in tellurite equiangular spiral photonic crystal fiber

Agrawal

Tiwari²,

Azabi

et al. 2013

Journal of Modern Optics

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This is the unspecified version of the paper.This version of the publication may differ from the final published version. We show simulations of very broad and flat Supercontinuum (SC)in both the normal and anomalous group velocity dispersion regimes of the same equiangular spiral photonic crystal fiber at low pumping powers. For the pump wavelength at 1557 nm and average pump power of 11.2 mW, we obtained a bandwidth > 3 µm (970 nm -4100 nm) at 40 dB below the peak spectral power with fiber dispersion ~ 2.1ps/km.nm at 1557 nm. In the same fiber, at pump wavelength 1930nm and average pump power of 12mW the SC bandwidth was more than 2 octaves (1300 nm -3700 nm) and dispersion was -1.3ps/km.nm at 1930 nm. This demonstrates the potential use of the fiber for multi-wavelength pumping with commercially available sources at fairly low power. Permanent repository link

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“…Only redistribution of energy takes place over the bandwidth achieved. Furthermore, in the work of other groups, example, Domachuk et al 7 and Qin et. al.…”

Section: Fig 5 Pulse Evolution Through the Es -Pcf (Spectral Domain)mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Ultrabroad supercontinuum generation in tellurite equiangular spiral photonic crystal fiber

Agrawal

Tiwari²,

Azabi

et al. 2013

Journal of Modern Optics

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“…ZBLAN (ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF) (Agger et al 2012), tellurite (eg. 75TeO 2 -12ZnO-5PbO-3PbF 2 -5Nb 2 O 5 ) (Domachuk et al 2008) and chalcogenide (As 2 S 3 ) (Marandi et al 2012). Usually, these glasses exhibit increased scattering losses (with exception of ZBLAN), which necessitates use of only short lengths of fiber for supercontinuum generation.…”

Section: Introductionmentioning

confidence: 99%

“…Also in silica suspended core PCFs, Mergo et al obtained nearly octave spanning supercontinua using as pump various wavelengths between 740 and 880 nm (Mergo et al 2008). More recent reports were focused on suspended core PCFs drawn from different non-silica glasses, with transmission windows enabling midinfrared generation (Domachuk et al 2008;El-Amraoui et al 2010;Savelii et al 2011Savelii et al , 2012. It is to be noted, that for photonic crystal fibers drawn from soft glasses, suspended core geometry enables reduction of thermal processing steps to the minimum, thus helping to avoid recrystallization of glass.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared supercontinuum generation in soft-glass suspended core photonic crystal fiber

et al. 2013

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Supercontinuum from 800 to 2,600 nm has been obtained in a soft glass suspendedcore photonic crystal fiber. The fiber has been fabricated using an in-house synthesized, lead-bismuth-galate oxide glass (PBG-08), which has a transmission window from 500 nm to 4,500 nm. Dispersion characteristic has been designed to enable efficient pumping in the anomalous regime, using typical telecommunication wavelengths and influence of discrepancy between design and physical dispersion profile of fiber is discussed. An optical parametric amplifier system seeded with a Ti:Sapphire oscillator has been used as a light source (70 fs pulses with 100 kHz repetition rate). Supercontinuum bandwidth on the midinfrared side is limited by OH − absorption of the glass and presence of second zero-dispersion wavelength in the spectral area of interest. Flatness the spectrum remains under 7 dB from roughly 1,800 nm to about 2,500 nm.

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“…These applications place widely varying demands on the characteristics of a supercontinuum source. Novel optical fibers can yield supercontinua spanning the ultraviolet into the midinfrared [6][7][8]. However, a requirement for shot-to-shot repeatability and a smooth spectrum limits the allowable propagation length, restricting the bandwidth [7].…”

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confidence: 99%

Multi-octave supercontinuum generation from mid-infrared filamentation in a bulk crystal

Austin

Silva

Thai

et al. 2013

EPJ Web of Conferences

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Abstract. We present supercontinuum generation pumped by femtosecond mid-infrared pulses in a bulk homogeneous material. The spectrum extends from 450 nm into the midinfrared, and carries high spectral energy density (3 pJ/nm-10 nJ/nm). The supercontinuum has high shot-to-shot reproducibility and preserves the carrier-to-envelope phase. Our result paves the way for compact supercontinuum sources with unprecedented bandwidth.Bright, broadband and coherent light sources are required, for example, in optical coherence tomography [1], time-resolved spectroscopy [2] and microscopy [3]. Such supercontinua are also a step towards arbitrary multi-color waveform synthesis, which offers simultaneous probing and control [4] of electronic, vibrational and rotational motion, or synthesizing single cycle waveforms at arbitrary wavelengths [5]. These applications place widely varying demands on the characteristics of a supercontinuum source. Novel optical fibers can yield supercontinua spanning the ultraviolet into the midinfrared [6][7][8]. However, a requirement for shot-to-shot repeatability and a smooth spectrum limits the allowable propagation length, restricting the bandwidth [7]. Spectral broadening in bulk materials, in contrast, has thus far not achieved bandwidths comparable to those from fibers. In particular, long wavelength extensions of the spectrum are inefficient and require extreme conditions [9][10][11]. This suggests the necessity of increasing the pump wavelength to extend the long wavelength edge of the supercontinuum, but raises the question of whether a corresponding red shift of the short wavelength edge will occur.Here, we present a supercontinuum produced by filamentation of femtosecond mid-infrared pulses in bulk yttrium aluminium garnet (YAG) crystal. The spectrum spans 450-4500 nm, the broadest ever produced by filamentation in bulk. We verify carrier-envelope phase stability and shot-to-shot repeatability. Simulations indicate an absence of complex pulse splitting and self-compression of the pump pulse by a factor of 10.The pump pulses were produced with an optical parametric chirped pulse amplifier (OPCPA), which delivered carrier-envelope phase stable 85 fs pulses at 3100 nm center wavelength and with a repetition rate of 160 kHz [12]. The setup for generating and measuring the supercontinuum is shown in Fig. 1(a). Pulses of 6.9 µJ energy were collimated to 4 mm diameter and were focused by a 75 mm focal length CaF 2 lens to a 1/e 2 diameter of 50 µm. The peak power was 76 MW which is approximately three times the critical power for YAG. The 2 mm-thick YAG plate was placed in the focal region, producing a clearly visible filament. We observed no irregular or interference patterns typically indicative of multifilamentation. At a distance of 54 mm after the exit plane of the YAG plate, we acquired an angularly-resolved {θ, λ} spectrum which provided our connection to the theory and This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which per...

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Over 4000 nm bandwidth of mid-IR supercontinuum generation in sub-centimeter segments of highly nonlinear tellurite PCFs

Cited by 417 publications

References 20 publications

Ultrabroad supercontinuum generation in tellurite equiangular spiral photonic crystal fiber

Ultrabroad supercontinuum generation in tellurite equiangular spiral photonic crystal fiber

Mid-infrared supercontinuum generation in soft-glass suspended core photonic crystal fiber

Multi-octave supercontinuum generation from mid-infrared filamentation in a bulk crystal

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