High-repetition-rate, high-peak-power 1450 nm laser source based on optical parametric chirped pulse amplification

Wang, Pengfei; Shao, Beijie; Su, Hongpeng; Lv, Xinlin; Li, Yanyan; Peng, Yujie; Leng, Yuxin

doi:10.1017/hpl.2019.19

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…The collimated femtosecond laser (1450 nm, 60 fs, 1 kHz) output by the optical parametric amplifier (OPA) was divided into a signal light part and a reference light part by a beam splitter. 45 The signal light was focused on the sample by a focusing lens with a focal length of 150 mm and collected by an optical power meter after reflection. The sample and reflected light paths (dashed boxes) were simultaneously scanned along the z axis.…”

Section: Resultsmentioning

confidence: 99%

Broad-Band Ultrafast All-Optical Switching Based on Enhanced Nonlinear Absorption in Corrugated Indium Tin Oxide Films

Jiang

Zhao

et al. 2022

ACS Nano

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Ultrafast all-optical switches based on epsilon-near-zero (ENZ)-enhanced nonlinear refraction in transparent conducting oxides have achieved exciting results in realizing large absolute modulations. However, broad-band, polarization-independent, and wide-angle ultrafast all-optical switches have been challenging to produce, due to the inherent narrow band, polarization-dependent, and angle-dependent characteristics of the ENZ effect. To this end, we propose an ultrafast all-optical switch based on the enhanced nonlinear absorption of corrugated indium tin oxide (ITO) thin films. Taking advantage of the perfect absorption and localized field enhancement of the ENZ and localized surface plasmon resonance modes, we significantly enhanced the nonlinear absorption of the corrugated ITO film in the 1450–1650 nm telecom band. The experimental results show that the nonlinear saturable absorption coefficient of the corrugated ITO film at 1450 nm was as high as −1.5 × 105 cm GW–1, enabling all-optical switching to obtain an extinction ratio of 14.32 dB and an ultrafast switching time of 350 fs at a pump fluence of 18.51 mJ cm–2. Furthermore, the all-optical switch achieved an extinction ratio of over 15 dB and an insertion loss of approximately 2.6 dB within the 200 nm absorption band and exhibited polarization-independent and wide-angle features. The ultrafast temporal response can be attributed to intraband transient bleaching of the corrugated ITO film. Our findings demonstrate that corrugated ENZ films can overcome the inherent narrow-band, polarization-dependent, and angle-dependent problems of natural ENZ materials without increasing the response time, making them a potential ENZ ultrafast all-optical switching material platform.

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Section: Resultsmentioning

confidence: 99%

Broad-Band Ultrafast All-Optical Switching Based on Enhanced Nonlinear Absorption in Corrugated Indium Tin Oxide Films

Jiang

Zhao

et al. 2022

ACS Nano

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“…The blue shift of Te‐O‐Te stretching vibration is due to the deformation of Te‐O‐Te bond caused by the introduction of GeO 2 42–44 . The blue shift at near 678 cm ‐1 might be attributed to the formation of [GeO 4 ] 4‐ units after the addition of GeO 2 , which can provide partial oxygen ions to achieve the network continuity and relative stability in a tellurite glass structure 45–47 …”

Section: Resultsmentioning

confidence: 99%

“…[42][43][44] The blue shift at near 678 cm -1 might be attributed to the formation of [GeO 4 ] 4units after the addition of GeO 2 , which can provide partial oxygen ions to achieve the network continuity and relative stability in a tellurite glass structure. [45][46][47] Raman and PL measurement of t-ND that have been treated by annealing and oxidation and raw ND powder were performed, as shown in Figures 4 and 5, respectively. In Figure 4, the Raman characteristic peak of diamond appears at 1332 cm −1 .…”

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confidence: 99%

The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

Gan

et al. 2020

J Am Ceram Soc

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Fluorescence of negative‐charged nitrogen‐vacancy centers in nanodiamond allows applications in quantum metrology, nanoscale sensor, and bioimaging, of utmost relevance to domains from nanotechnologies to biosensing. However, the low color center content and collection efficiency of photons are crucial issues. Although, several studies about coupling nanodiamond into optical waveguides have already been proposed, the search for the most appropriate substance and simplest, most effective method are of keys. In this study, we present a novel nontraditional way to incorporate nanodiamond with increased negative‐charged nitrogen‐vacancy content to 75.48% into tellurite germanate glass. The hybrid glass is stable in structure with predominant TeO4 trigonal bipyramid. Moreover, the fluorescence intensity is enhanced in composite. Such robust nanodiamond in tellurite germanate glass optical system has the potential to be used for nanoparticle sensing and quantum metrology.

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“…1(a). The setup consists of a Ti:sapphire femtosecond laser (Astrella, Coherent Inc.), a home-made two-stage OPA device [25], a beam down-collimator, a 5 mm × 5 mm × 0.6 mm DSTMS crystal and FS plates. The OPA device driven by a Ti:sapphire laser delivers NIR pulses with 63 fs pulse duration and 1.5 μm central wavelength.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

Near-Infrared Supercontinuum and Ultrashort Pulses Generated Based on Phase-Mismatched Cascaded Frequency Conversion in DSTMS Crystal

et al. 2020

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A near-infrared (NIR) supercontinuum and ultrashort pulses are generated via phase-mismatched cascaded frequency conversion in DSTMS (4-N, N-dimethylamino-4'-N'-methyl-stilbazolium 2, 4, 6-trimethylbenzenesulfonate) crystal. NIR pulses with a central wavelength of 1.5 μm and 63 fs pulse duration are incident into the crystal, and the spectrum is broadened to over 1200-2100 nm. Compensating the dispersion by fused silica, ultrashort NIR pulses with 16.6 fs pulse duration are obtained. Meanwhile, intense single-cycle terahertz pulses are generated via optical rectification in DSTMS crystal.

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High-repetition-rate, high-peak-power 1450 nm laser source based on optical parametric chirped pulse amplification

Cited by 7 publications

References 24 publications

Broad-Band Ultrafast All-Optical Switching Based on Enhanced Nonlinear Absorption in Corrugated Indium Tin Oxide Films

Broad-Band Ultrafast All-Optical Switching Based on Enhanced Nonlinear Absorption in Corrugated Indium Tin Oxide Films

The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

Near-Infrared Supercontinuum and Ultrashort Pulses Generated Based on Phase-Mismatched Cascaded Frequency Conversion in DSTMS Crystal

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