Jennifer Herek

prof.dr.

  • 1493 Citations
  • 22 h-Index
20072019
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Research Output 2007 2019

2019
2 Downloads (Pure)

Energy-transfer upconversion and excited-state absorption in KGdxLuyEr1-x-y(WO4)2 waveguide amplifiers

Vázquez-córdova, S. A., Aravazhi, S., Heuer, A. M., Kränkel, C., Yong, Y., García-blanco, S. M., Herek, J. L. & Pollnau, M., 1 Dec 2019, In : Optical materials express. 9, 12, p. 4782-4795

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Excited states
Energy transfer
Waveguides
Pumps
Wavelength
1 Downloads (Pure)

Gain dynamics in a highly ytterbium-doped potassium double tungstate thin-film amplifier

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García-Blanco, S. M. & Pollnau, M., 1 Jan 2019, Solid State Lasers XXVIII: Technology and Devices. Clarkson, W. A. & Shori, R. K. (eds.). SPIE, Vol. 10896. 108961G. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 10896).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Open Access
File
Ytterbium
tungstates
Potassium
ytterbium
Energy transfer
2018
3 Citations (Scopus)

Gain dynamics in a highly ytterbium-doped potassium double tungstate epitaxial layer

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García-Blanco, S. M. & Pollnau, M., 21 Aug 2018, In : Journal of the Optical Society of America B: Optical Physics. 35, 9, p. 2176-2185 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

tungstates
ytterbium
potassium
energy transfer
population inversion
5 Citations (Scopus)
58 Downloads (Pure)

High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers

Vázquez-Córdova, S. A., Aravazhi, S., Grivas, C., Yong, Y. S., García-Blanco, S. M., Herek, J. L. & Pollnau, M., 5 Mar 2018, In : Optics express. 26, 5, p. 6260-6266 7 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
tungstates
erbium
potassium
amplifiers
waveguides
128 Downloads (Pure)

On the interaction of waves carrying light, sound and small particles: wave-based methods for miniature laboratories and fast optical sensing

van 't Oever, J. J. F., 15 Feb 2018, Enschede: University of Twente. 135 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

Open Access
File
sound waves
acoustics
interactions
acoustic streaming
rail transportation
2017
8 Citations (Scopus)
43 Downloads (Pure)

Direct confocal lifetime measurements on rare-earth-doped media exhibiting radiation trapping

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Carvajal, J. J., Diaz, F., Herek, J. L., García Blanco, S. M. & Pollnau, M., 2017, In : Optical materials express. 7, 2, p. 527-532

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Rare earths
Radiation
Potassium
Luminescence
Ytterbium

Direct confocal measurement of luminescence lifetimes on ground-state transitions with reabsorption

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Carvajal, J. J., Diaz, F., Herek, J. L., García Blanco, S. M. & Pollnau, M., 27 Aug 2017.

Research output: Contribution to conferencePosterOther research output

Erbium-doped channel waveguide amplifiers in amorphous aluminium oxide and crystalline potassium double tungstate

Vázquez-Córdova, S. A., 22 Jun 2017, Enschede: University of Twente. 142 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

High gain in erbium-doped channel waveguides

Vázquez-Córdova, S. A., Aravazhi, S., Grivas, C., Yong, Y. S., García-Blanco, S. M., Herek, J. L. & Pollnau, M., 26 Jun 2017, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017. Optical Society of America, Vol. Part F82-CLEO_Europe 2017. 139018

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

23 Downloads (Pure)

High optical gain in KGdxLuyEr1-x-y(WO4)2 waveguide amplifiers despite energy-transfer upconversion

Vázquez-Córdova, S. A., Aravazhi, S., Grivas, C., Yong, Y. S., García Blanco, S. M., Herek, J. L. & Pollnau, M., 28 Aug 2017, International Conference on Luminescence. paper S8C.2

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Open Access
File
100 Downloads (Pure)

High-power, highly-efficient thulium-doped potassium double tungstate channel waveguide lasers

van Dalfsen, K., 23 Feb 2017, Enschede: University of Twente. 125 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

Open Access
File
thulium
tungstates
waveguide lasers
potassium
waveguides
1 Downloads (Pure)

Numerical study of submicroparticle acoustophoresis using higher-order modes in a rectangular microchannel

van 't Oever, J. J. F., Herek, J. L., Mugele, F. G., van den Ende, H. T. M. & Offerhaus, H. L., 1 Dec 2017, In : Journal of sound and vibration. 415, p. 169-183 15 p.

Research output: Contribution to journalArticleAcademicpeer-review

microchannels
Microchannels
Acoustic streaming
Radiation
Lab-on-a-chip
126 Downloads (Pure)

Potassium double tungstate waveguides with high ytterbium concentration for optical amplification

Yong, Y-S., 22 Jun 2017, Enschede: University of Twente. 121 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

Open Access
File
tungstates
ytterbium
potassium
waveguides
epitaxy
2 Citations (Scopus)

Spectroscopy of erbium-doped potassium double tungstate waveguides

Vázquez-Córdova, S. A., Aravazhi, S., Grivas, C., Heuer, A. M., Kränkel, C., Yong, Y. S., García-Blanco, S. M., Herek, J. L. & Pollnau, M., 16 Feb 2017, Integrated Optics: Devices, Materials, and Technologies XXI. SPIE, Vol. 10106. 1010604

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Erbium
tungstates
Potassium
Upconversion
erbium

Temperature dependence of the transition cross sections of rare-earth ions

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Carvajal, J. J., Diaz, F., Herek, J. L., García Blanco, S. M. & Pollnau, M., 27 Aug 2017.

Research output: Contribution to conferencePosterOther research output

Temperature dependence of transition cross sections in rare-earth-doped laser materials

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García Blanco, S. M. & Pollnau, M., 25 Jun 2017.

Research output: Contribution to conferencePosterOther research output

Temperature dependence of transition cross sections in rare-earth-doped laser materials

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García-Blanco, S. M. & Pollnau, M., 26 Jun 2017, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017. Optical Society of America, Vol. Part F82-CLEO_Europe 2017. 139018

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Temperature-dependent absorption and gain of ytterbium-doped potassium double tungstates for chip-scale amplifiers and lasers

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García-Blanco, S. M. & Pollnau, M., 16 Feb 2017, Integrated Optics: Devices, Materials, and Technologies XXI. SPIE, Vol. 10106. 1010606

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Ytterbium
tungstates
Potassium
ytterbium
potassium
2016
4 Citations (Scopus)
43 Downloads (Pure)

A phased antenna array for surface plasmons

Dikken, D. J. W., Korterik, J. P., Segerink, F. B., Herek, J. L. & Prangsma, J., 2016, In : Scientific reports. 6, 25037.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
antenna arrays
phased arrays
plasmons
polaritons
radio astronomy
91 Downloads (Pure)

Early-time photodynamics of ruthenium-based photocatalysts for light-induced hydrogen generation

Pan, Q., 27 Oct 2016, Enschede: University of Twente. 157 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

Open Access
File
Ruthenium
Photocatalysts
Hydrogen
Ligands
Excited states

Erbium doped waveguide amplifiers operating at the C-band

Vázquez-Córdova, S. A., Yong, Y. S., Dijkstra, M., Herek, J. L., García Blanco, S. M. & Pollnau, M., 19 Jan 2016, p. -.

Research output: Contribution to conferencePosterOther research output

Er-doped potassium double tungstate channel waveguides with high optical gain

Vázquez-Córdova, S. A., Aravazhi, S., Grivas, C., Yong, Y. S., García Blanco, S. M., Herek, J. L. & Pollnau, M., 17 Nov 2016, p. -.

Research output: Contribution to conferencePosterOther research output

Influence of temperature on the transition cross-sections and the optical gain of highly Yb-doped potassium double tungstates

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García Blanco, S. M. & Pollnau, M., 17 Nov 2016, p. -.

Research output: Contribution to conferencePosterOther research output

New architectures for integrated optics: low-loss tight bends and on-chip high-index-contrast potassium double Tungstate waveguides

Sefünç, M., 15 Jun 2016, Enschede: Universiteit Twente. 124 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

tungstates
integrated optics
potassium
chips
waveguides
33 Downloads (Pure)

Optical antennas with sinusoidal modulation in width

Dikken, D. J., Segerink, F. B., Korterik, J. P., Pfaff, S. S., Prangsma, J. C. & Herek, J. L., 8 Aug 2016, In : Optics express. 24, 16, p. 17874-17885 12 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
antennas
modulation
antenna design
sustaining
shift

Optical gain of 13 dB/cm at ~1.53 µm in KGdxLuxEr1-2x(WO4)2 channel waveguides and the influence of parasitic spectroscopic processes

Vázquez-Córdova, S. A., Aravazhi, S., Grivas, C., Heuer, A. M., Krankel, C., Yong, Y. S., García Blanco, S. M., Herek, J. L. & Pollnau, M., 21 Aug 2016, p. -.

Research output: Contribution to conferencePosterOther research output

2 Citations (Scopus)
50 Downloads (Pure)

Spectral control of high-harmonic generation via drive laser pulse shaping in a wide-diameter capillary

Goh, S. J., Reinink, J., Tao, Y., van der Slot, P. J. M., Bastiaens, H. M. J., Herek, J. L., Biedron, S. G., Milton, S. V. & Boller, K. J., 20 Jan 2016, In : Optics express. 24, 2, p. 1604-1605

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
harmonic generations
tuning
pulses
harmonics
gas pressure
14 Citations (Scopus)
31 Downloads (Pure)

Temperature-dependent absorption and emission of potassium double tungstates with high ytterbium content

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Carvajal, J. J., Diaz, F., Herek, J. L., García Blanco, S. M. & Pollnau, M., 2016, In : Optics express. 24, 23, p. 26825-26837

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
tungstates
ytterbium
absorption cross sections
potassium
amplifiers
2015
93 Downloads (Pure)

Antennas for light and plasmons

Dikken, D. J. W., 30 Sep 2015, Enschede: Universiteit Twente. 170 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

File
plasmons
antennas
far fields
near fields
electromagnetic radiation

Harmonic control of ultrasonic streaming in microchannels

van 't Oever, J. J. F., Mugele, F. G., Offerhaus, H. L., van den Ende, H. T. M. & Herek, J. L., 20 Jan 2015, p. -.

Research output: Contribution to conferencePosterOther research output

Hybrid imaging of fluorescently labeled cancer drugs and label-free four-wave mixing microscopy of cancer cells and tissues

Krabbendam, R., Pool, M., de Vries, L. G., Offerhaus, H. L., Herek, J. L. & Otto, C., 2015, In : Journal of biomedical optics. 20, 8, p. - 086006.

Research output: Contribution to journalArticleAcademicpeer-review

Four wave mixing
four-wave mixing
Labels
Microscopic examination
drugs
1 Citation (Scopus)

Hybrid imaging of fluorescently labeled cancer drugs and label-free four-wave mixing microscopy of cancer cells and tissues

Krabbendam, R., Pool, M., Offerhaus, H. L., Herek, J. L. & Otto, C., 2015, p. -.

Research output: Contribution to conferencePosterOther research output

Imaging acoustic pressure in microchannels

van 't Oever, J. J. F., Frentrop, R. N., Wijnperle, D., Offerhaus, H. L., van den Ende, H. T. M., Herek, J. L. & Mugele, F. G., 13 Oct 2015, p. -.

Research output: Contribution to conferencePosterOther research output

7 Citations (Scopus)
34 Downloads (Pure)

Imaging Local Acoustic Pressure in Microchannels

van 't Oever, J. J. F., Frentrop, R. N., Wijnperle, D., Offerhaus, H. L., van den Ende, H. T. M., Herek, J. L. & Mugele, F. G., 2015, In : Applied Optics. 54, 21, p. 6482-6490

Research output: Contribution to journalArticleAcademicpeer-review

File
microchannels
Microchannels
Acoustics
Acoustic fields
Imaging techniques

Imaging the local acoustic pressure in microchannels

van 't Oever, J. J. F., Frentrop, R. N., Wijnperle, D., Offerhaus, H. L., van den Ende, H. T. M., Herek, J. L. & Mugele, F. G., 23 Aug 2015.

Research output: Contribution to conferencePosterOther research output

5 Citations (Scopus)
46 Downloads (Pure)

In-chip direct laser writing of a centimeter-scale acoustic micromixer

van 't Oever, J. J. F., Spannenburg, N. K., Offerhaus, H. L., van den Ende, H. T. M., Herek, J. L. & Mugele, F. G., 21 Apr 2015, In : Journal of micro/nanolithography, MEMS, and MOEMS. 14, 2, p. 023503- 023503.

Research output: Contribution to journalArticleAcademicpeer-review

File
Acoustic streaming
acrylates
microchannels
Microchannels
actuation

In-chip direct laser writing of microstructures up to centimeter scale

van 't Oever, J. J. F., Offerhaus, H. L., van den Ende, H. T. M., Herek, J. L. & Mugele, F. G., 19 Jan 2015, p. -.

Research output: Contribution to conferencePosterOther research output

2 Citations (Scopus)

Observation of nonlinear bands in near-field scanning optical microscopy of a photonic-crystal waveguide

Singh, A., Ctistis, G., Huisman, S. R., Korterik, J. P., Mosk, A., Herek, J. L. & Pinkse, P. W. H., 2015, In : Journal of applied physics. 117, 3, p. 033104-033104-6 6 p., 033104.

Research output: Contribution to journalArticleAcademicpeer-review

near fields
photonics
microscopy
waveguides
scanning

Optical amplification in an Yb-doped potassium double tungstate thin film

Yong, Y. S., Aravazhi, S., Vázquez-Córdova, S. A., Herek, J. L., García Blanco, S. M. & Pollnau, M., 20 Jan 2015, p. -.

Research output: Contribution to conferencePosterOther research output

1 Citation (Scopus)
1 Downloads (Pure)

Optical gain around 1.5 µm in erbium-doped waveguide amplifiers

Vázquez-Córdova, S. A., Yong, Y. S., Herek, J. L., García Blanco, S. M. & Pollnau, M., 5 Jul 2015, 17th International Conference on Transparent Optical Networks, ICTON 2015. USA: IEEE Photonics Society, p. Paper Th.A5.4 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

erbium
amplifiers
waveguides
tungstates
ytterbium
136 Downloads (Pure)

Photoelectrochemical water splitting: optimizing interfaces and light absorption

Park, S-Y., 24 Sep 2015, Enschede: Universiteit Twente. 155 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

File
Light absorption
Water
Hydrogen
Semiconductor materials
Fabrication
121 Downloads (Pure)

Shedding light on fractals: exploration of the Sierpinski carpet optical antenna

Chen, T. L., 21 May 2015, Enschede: Universiteit Twente. 122 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

File
fractals
antennas
radio frequencies
microscopy
fabrication
2 Citations (Scopus)
49 Downloads (Pure)

Single-shot fluctuations in waveguided high-harmonic generation

Goh, S. J., Tao, Y., van der Slot, P. J. M., Bastiaens, H. M. J., Herek, J., Biedron, S. G., Danailov, M. B., Milton, S. V. & Boller, K-J., 2015, In : Optics express. 23, 19, p. 24888-24902 14 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
shot
harmonic generations
harmonics
pulses
waveguides
1 Citation (Scopus)

Spiral amplifiers in a-Al2O3:Er on a silicon chip with 20 dB internal net gain

Vázquez-Córdova, S. A., Bernhardi, E., Worhoff, K., Herek, J. L., García Blanco, S. M. & Pollnau, M., Apr 2015, Integrated Optics: Devices, Materials, and Technologies XIX. Bellingham, USA: SPIE, p. Paper 93650M 6 p. (Proceedings of the SPIE; vol. 9365).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

amplifiers
chips
silicon
erbium
quenching
2014
7 Citations (Scopus)
47 Downloads (Pure)

Characterization of Sierpinski carpet optical antenna at visible and near-infrared wavelengths

Chen, T. L., Dikken, D. J., Prangsma, J. C., Segerink, F. & Herek, J. L., 2014, In : New journal of physics. 16, 13 p., 093024.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
antennas
wavelengths
far fields
fractals
near fields
3 Citations (Scopus)
36 Downloads (Pure)

Coherent anti-Stokes Raman Scattering (CARS) Microscopy Visualizes Pharmaceutical Tablets During Dissolution

Fussell, A. L., Kleinebudde, P., Herek, J., Strachan, C. J. & Offerhaus, H. L., 2014, In : Journal of visualized experiments. 89, 6 p., e51847.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Raman Spectrum Analysis
Drug products
Tablets
Theophylline
Raman scattering
83 Downloads (Pure)

Coherent anti-Stokes Raman scattering microscopy for pharmaceutics: a shift in the right direction

Fussell, A. L., 4 Jul 2014, Enschede: Universiteit Twente. 124 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

File
Raman scattering
Microscopic examination
Pharmaceutical Preparations
Dosage Forms
Silicon Dioxide
5 Downloads (Pure)

Coherent control of high harmonic generation in a large-volume capillary for seeding of free-electron lasers

Goh, S. J., Reinink, J., Tao, Y., Bastiaens, H. M. J., van der Slot, P. J. M., Biedron, S. G., Danailov, M. B., Milton, S. V., Herek, J. & Boller, K-J., 11 Mar 2014. 1 p.

Research output: Contribution to conferencePosterOther research output

Open Access
File
inoculation
free electron lasers
harmonic generations
harmonics
seeds
56 Downloads (Pure)

Contrast in coherent raman scattering microscopy

Garbacik, E. T., 23 May 2014, Enschede: Universiteit Twente. 125 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

File
coherent scattering
Raman spectra
microscopy
color coding
molecules

Determination of cluster size, density and cluster mass fraction in a modulated argon cluster jet

Tao, Y., Goh, S. J., van der Slot, P. J. M., Bastiaens, H. M. J., van Goor, F. A., van der Weide, E. T. A., Hagmeijer, R., Biedron, S. G., Milton, S. V., Danailov, M. B., Herek, J. L. & Boller, K. J., 7 Oct 2014, p. -.

Research output: Contribution to conferencePosterOther research output