1. C. Stevens, J. Paul, T. Cox, P. Sahoo, H. Gutiérrez, V. Turkowski, D. Semenov, S. McGill, M. Kapetanakis, I. Perakis, D. Hilton,and D. Karaiskaj, Biexcitons in monolayer transition metal dichalcogenides tuned by magnetic fields, Nature communications 9 (2018).
   
   
2. Jeremy A Curtis, Ashlyn D Burch, Biplob Barman, A Garrison Linn, Luke M McClintock, Aidan L O’Beirne, Matthew J Stiles, John L Reno, Stephen A McGill, Denis Karaiskaj, David J Hilton, Broadband ultrafast terahertz spectroscopy in the 25 T Split Florida-Helix,Review of Scientific Instruments 89, 073901 (2018).
   
   
3. CE Stevens, Tineke Stroucken, AV Stier, J Paul, H Zhang, P Dey, SA Crooker, SW Koch, D Karaiskaj, Superradiant coupling effects in transition-metal dichalcogenides,Optica 5 (2018) 749-755.
   
   
4. J Paul, CE Stevens, H Zhang, P Dey, D McGinty, SA McGill, RP Smith, JL Reno, V Turkowski, IE Perakis, DJ Hilton, D Karaiskaj, Coulomb-interaction induced coupling of Landau levels in intrinsic and modulation-doped quantum wells, Physical Review B 95, 245314 (2017).
   
   
5. Ashlyn D Burch, JA Curtis, AG Linn, B Barman, M Stiles, JL Reno, SA McGill, D Karaiskaj, DJ Hilton, Development of a Gas Plasma-Based THz Time-Domain Spectrometer for the 25 T Split Florida Helix Magnet System, Bulletin of the American Physical Society 61 (2016).
   
   
6. J Paul, CE Stevens, C Liu, P Dey, C McIntyre, V Turkowski, JL Reno, DJ Hilton, D Karaiskaj, Strong quantum coherence between Fermi liquid Mahan excitons, Physical review letters 116, 157401 (2016).
   
   
7. P Dey, J Paul, Zefang Wang, CE Stevens, Cunming Liu, AH Romero, Jie Shan, DJ Hilton, Denis Karaiskaj, Optical coherence in atomic-monolayer transition-metal dichalcogenides limited by electron-phonon interactions, Physical review letters 116, 127402 (2016).
   
   
8. Prasenjit Dey, Jagannath Paul, G Moody, CE Stevens, Neil Glikin, ZD Kovalyuk, ZR Kudrynskyi, AH Romero, Andres Cantarero, DJ Hilton, D Karaiskaj, Biexciton formation and exciton coherent coupling in layered GaSe, The Journal of chemical physics 142, 212422 (2015).
   
   
9. J. Paul, P. Dey, T. Tokumoto, J.L. Reno, D.J. Hilton, and D. Karaiskaj, Exploring Two-dimensional Electron Gases with 2DFT Spectroscopy, Journal of Chemical Physics 141 (2015).
   
   
10. P. Dey, J. Paul, N. Glikin, Z.D. Kovalyuk, Z.R. Kudrynskyi, A.H. Romero, and D. Karaiskaj, Mechanism of Excitonic Dephasing in Layered InSe Crystals, Physical Review B 89, 125128 (2014).
    
    
11. P. Dey, J. Paul, J. Bylsma, S. Deminico, and D. Karaiskaj, Continuoulsy Tunable Optical Multidimensional Fourier-transform Spectrometer, Review of Scientific Intruments 84, 023107 (2013).
    
    
12. P. Dey, J. Paul, J. Bylsma, D. Karaiskaj, J.M. Luther, M.C. Beard, A.H. Romero, Origin of the Temperature Dependence of the Band Gap of PbS and PbSe Quantum Dots, Solid State Communications 165 (2013) 49-54.
    
    
13. J. Bylsma, P. Dey, J. Paul, S. Hoogland, E.H. Sargent, J.M. Luther, M.C. Beard, and D. Karaiskaj, Quantum Beats Due to Excitonic Ground-state Splitting in Colloidal Quantum Dots, Physical Review B 86, 125322 (2012).
    
    
14. Steven T. Cundiff, Alan D. Bristow, Mark Siemens, Hebin Li, Galan Moody, Denis Karaiskaj, Xingcan Dai and Tianhao Zhang, Optical Two-Dimensional Fourier Transform Spectroscopy of Excitons in Semiconductor Nanostructures, invited paper in IEEE J. Spec. Topics Quantum Electr. (2011).
    
    
15. G. Moody, M. E. Siemens, A. D. Bristow, X. Dai, D. Karaiskaj, A. S. Bracker, D. Gammon and S. T. Cundiff, Spectral broadening and population relaxation in a GaAs interfacial quantum dot ensemble and quantum well nanostructure, Phys. Status Solidi B, 1-4 (2011) Editor's choice, cover page.
    
    
16. G. Moody, M. E. Siemens, A. D. Bristow, X. Dai, D. Karaiskaj, A. S. Bracker, D. Gammon, and S. T. Cundiff, Exciton-exciton and exciton-phonon interactions in an interfacial GaAs quantum dot ensemble, Submitted to Physical Review B 83, 115324 (2011).
    
    
17. X. Dai, A. D. Bristow, D. Karaiskaj and S. T. Cundiff, Two-dimensional Fourier-transform Spectroscopy of Potassium Vapor, Submitted to Physical Review A 82, 052503 (2010).
    
    
18. Denis Karaiskaj, Alan D. Bristow, Lijun Yang, Xingcan Dai, Richard P. Mirin, Shaul Mukamel, and Steven T. Cundiff, Two-Quantum Many-Body Coherences in Two-Dimensional Fourier-Transform Spectra of Exciton Resonances in Semiconductor Quantum Wells, Phys. Rev. Lett. 104, 117401 (2010)
    
    
19. A. D. Bristow, D. Karaiskaj, X. Dai, T. Zhang, C. Carlsson, K. R. Hagen, R. Jimenez and S. T. Cundiff, A versatile ultra-stable platform for optical multidimensional Fourier-transform spectroscopy, Review of Scientific Instruments 80, 073108 (2009).
    
    
20. S. T. Cundiff, T. Zhang, A. D. Bristow, D. Karaiskaj, X. Dai, Optical two-dimensional Fourier transform spectroscopy of semiconductors, Accounts of Chemical Research 42, 1423 (2009).
    
    
21. Alan D. Bristow, Denis Karaiskaj, Xingcan Dai, Richard. P. Mirin and Steven T. Cundiff, Polarization dependence of semiconductor exciton and biexciton contributions to phase-resolved optical two-dimensional Fourier-transform spectra, Physical Review B (Rapid Comm.) 79, 161305(R) (2009).
    
    
22. A. Yang, M. Steger, T. Sekiguchi, D. Karaiskaj, M. L. W. Thewalt, M. Cardona, K. M. Itoh, H. Riemann, N. V. Abrosimov, M. F. Churbanov, A. V. Gusev, A. D. Bulanov, I. D. Kovalev, A. K. Kaliteevskii, O. N. Godisov, P. Becker, H.-J. Pohl, J. W. Ager III, and E. E. Haller, Single-frequency laser spectroscopy of the boron bound exciton in Si-28, Physical Review B 80, 195203 (2009).
    
    
23. M. Steger, A. Yang, D. Karaiskaj, M. L. W. Thewalt, E. E. Haller, J. W. Ager III, M. Cardona, H. Riemann, N. V. Abrosimov, A. V. Gusev, A. D. Bulanov, A. K. Kaliteevskii, O. N. Godisov, P. Becker, and H.-J. Pohl. Shallow impurity absorption spectroscopy on isotopically enriched silicon, Physical Review B 79, 205210 (2009).
    
    
24. Alan D. Bristow, Denis Karaiskaj, Xingcan Dai and Steven T. Cundiff. All-optical retrieval of the global phase for two-dimensional Fourier-transform spectroscopy, Optics Express 16, 18017 (2008).
    
    
25. D. Karaiskaj, A. Mascarenhas, J. F. Klem, K. Volz, W. Stolz, M. Adamcyk, and T. Tiedje. Excitons bound to nitrogen pairs in GaAs as seen by photoluminescence of high spectral and spatial resolution. Physical Review B 76, 125209 (2007).
    
    
26. D. Karaiskaj, A. Mascarenhas, Jong Hyun Choi, Rachel Graff, and Michael S. Strano. The temperature dependence of the photoluminescence decay of semiconducting carbon nanotubes: The effective lifetime. Physical Review B 75 113409 (2007).
    
    
27. D. Karaiskaj and A. Mascarenhas. The role of electron-phonon interaction and external strain on the electronic properties of semiconducting carbon nanotubes. Physical Review B 75 115426 (2007).
    
    
28. M. L. W. Thewalt, A. Yang, M. Stenger, D. Karaiskaj, M. Cardona, H. Riemann, N. V. Abrosimov, A. V. Gusev, A. D. Bulanov, I. D. Kovalev, A. K. Kaliteevskii, O. N. Godisov, P. Becker, H. J. Pohl, E. E. Haller, J. W. Ager III, and K. M. Itoh. Direct observation of the donor nuclear spin in a near-gap bound exciton transition: 31P in highly enriched 28Si. Journal of Applied Physics 101, 081724 (2007).
    
    
29. D. Karaiskaj, C. Engtrakul, T. McDonald, M. J. Heben, and A. Mascarenhas. Intrinsic and extrinsic effects in the temperature dependent photoluminescence of semiconducting carbon nanotubes. Physical Review Letters 96, 106805 (2006).
    
    
30. D. Karaiskaj, A. Mascarenhas, M. Adamcyk, E. C. Young, and T. Tiedje. Ultra narrow photoluminescence transitions of nitrogen cluster bound excitons in GaAs. Physical Review B 74, 035208 (2006).
    
    
31. Soohwan Sul, Denis Karaiskaj, Ying Jiang, and Nien-Hui Ge. Conformations of N-Acetyl-L-Prolinamide by Two-Dimensional Infrared Spectroscopy. Journal of Physical Chemistry B 110, 19891-19905 (2006).
    
    
32. A. Yang, M. Steger, D. Karaiskaj, M. L. W. Thewalt, M. Cardona, K. M. Itoh, H. Riemann, N. V. Abrosimov, M. F. Churbanov, A. V. Gusev, A. D. Bulanov, A. K. Kaliteevskii, O. N. Godisov, P. Becker, H.-J. Pohl, J. W. Ager III, and E. E. Haller. Optical detection and ionization of donors in specific electronic and nuclear spin states. Physical Review Letters 97, 227401 (2006).
    
    
33. M. Steger, A. Yang, D. Karaiskaj, M. L. W. Thewalt, E. E. Haller, J. W. Ager III, M. Cardona, H. Riemann, N. V. Abrosimov, A. V. Gusev, A. D. Bulanov, A. K. Kaliteevskii, O. N. Godisov, P. Becker, H.-J. Pohl, and K. M. Itoh. Shallow impurity absorption spectroscopy in isotopically enriched silicon. Proceedings of the 28th International Conference on the Physics of Semiconductors, July 24 – 28 / 2006 Vienna, Austria.
    
    
34. D. Karaiskaj, N.-H. Ge, S. Sul, and Y. Jiang. Resolving Conformations of Acetylproline-NH2 by coherent two-dimensional infrared spectroscopy. In ‘Ultrafast Phenomena XIV’ (eds: T. Kobayashi, T. Okada, K. /a. Nelson, S. de Silvestri) Springer-Verlag, p. 545 (2005).
    
    
35. M. L. W. Thewalt, T. A. Meyer, D. Karaiskaj, M. Cardona, E. E. Haller, J. W. Ager III and H. Riemann. Progress in Semiconductor Spectroscopy using isotopically enriched Si. Proceedings of the 27th International Conference on the Physics of Semiconductors, July 26 – 30 / 2004 Flagstaff, Arizona, USA.
    
    
36. D. Karaiskaj, T. A. Meyer, M. L. W. Thewalt, and M. Cardona. Dependence of the ionization energy of shallow donors and acceptors in silicon on the host isotopic mass. Physical Review B (Rapid Comm.) 68, 121201 (2003).
    
    
37. D. Karaiskaj, J. A. H. Stotz, T. Meyer, M. L. W. Thewalt, and M. Cardona. Impurity absorption spectroscopy in ²⁸Si: the importance of inhomogeneous isotope broadening. Physical Review Letters 90, 186402 (2003).
    
    
38. T. A. Meyer, D. Karaiskaj, M. L. W. Thewalt, and M. Cardona. Effect of the isotopic mass of gallium on the indirect gap of GaP. Solid State Communications 126, 119-123 (2003).
    
    
39. D. Karaiskaj, G. Kirczenow, M. L. W. Thewalt, R. Buczko, and M. Cardona. The origin of the residual acceptor ground state splitting in silicon. Physical Review Letters 90, 016404 (2003).
    
    
40. M. L. W. Thewalt, D. Karaiskaj, T. Ruf, and M. Cardona. Ultrahigh resolution photoluminescence spectroscopy of isotopically pure silicon. Physics of semiconductors 2002, Proceedings institute of physics conference series 171: 101-108 (2003).
    
    
41. D. Karaiskaj, M. L. W. Thewalt, T. Ruf, and M. Cardona. Photoluminescence Studies of isotopically enriched silicon. Proceedings of the 10th International Conference on Shallow Level Centers in Semiconductors, July 24-27 / 2002, Warsaw, Poland. Physica Status Solidi (b) 235, 63 (2003) (Cover picture, editor’s choice).
    
    
42. D. Karaiskaj and M. L. W. Thewalt. Photoluminescence study of the 1052-meV ‘O-line’ optical transitions in heat-treated Czochralski Si. Proceedings of the 26th International Conference on the Physics of Semiconductors, July 28 – Aug 02 / 2002 Edinburgh, UK.
    
    
43. M. L. W. Thewalt, D. Karaiskaj, T. Ruf, and M. Cardona. Ultrahigh resolution photoluminescence spectroscopy of excitons in isotopically pure silicon. EXCON’02, 5th International Conference on Excitonic Processes in Condensed Matter, July 22-26 / 2002 Darwin, Australia.
    
    
44. D. Karaiskaj, M. L. W. Thewalt, T. Ruf, M. Cardona, and M. Konuma. Photoluminescence studies of isotopically enriched silicon: Isotopic effects on the indirect band gap and phonon energies. Solid State Communications 123, 87 (2002).
    
    
45. D. Karaiskaj, M. L. W. Thewalt, T. Ruf, M. Cardona, and M. Konuma. “Intrinsic” acceptor ground state splitting in silicon: An isotopic effect. Physical Review Letters 89, 016401-1 (2002).
    
    
46. D. Karaiskaj, M. L. W. Thewalt, T. Ruf, M. Cardona, H.-J. Pohl, G. G. Deviatych, P. G. Sennikov, and H. Riemann. Photoluminescence of isotopically purified silicon: How sharp are bound exciton transitions? Physical Review Letters 86, 6010 (2001).
    
    
47. M. Adamcyk, S. Texier, B. J. Ruck, J. H. Schmid, T. Tiedje, V. Fink, M. Jeffries, D. Karaiskaj, K. L. Kavanagh, M. L. W. Thewalt. Faceting transition in epitaxial growth of GaNAs films on GaAs. Journal of vacuum science & technology B 19, 1417 (2000).
    
    
48. M. Hofmann, D. Karaiskaj, C. Ellmers, T. Maxisch, F. Jahnke, H.-J. Kolbe, G. Weiser, R. Rettig, S. Leu, W. Stolz, S. W. Koch, W. W. Rühle. Normal-mode linewidths in a semiconductor microcavity with various cavity qualities. Physica Status Solidi (a) 178, 179 (2000).
    
    
49. C. Ellmers, S. Leu, M. Hofmann, D. Karaiskaj, W. W. Rühle, W. Stolz. Ultrafast dynamic response of strain-compensated (GaIn)As/Ga(PAs) microcavity lasers. (The Vertical-Cavity Surface-Emitting Lasers III ) Proceedings of the SPIE – The International Society for Optical Engineering 3627, 70 (1999).
    
    
50. D. Karaiskaj, T. Maxisch, C. Ellmers, H.-J. Kolbe, G. Weiser, R. Rettig, S. Leu, W. Stolz, M. Hofmann, F. Jahnke, S. W. Koch, W. W. Rühle. Linewidths in a semiconductor microcavity with variable strength of normal-mode coupling. Physical Review B 59, 13525 (1999).
    
    
51. C. Ellmers, F. Hohnsdorf, J. Koch, C. Agert, S. Leu, D. Karaiskaj, M. Hofmann, W. Stolz, W. W. Rühle. Ultrafast (GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser for the 1.3 μm wavelength regime. Applied Physics Letters 74, 2271 (1999).
    
    
52. C. Ellmers, M. Hofmann, D. Karaiskaj, S. Leu, W. Stolz, W. W. Rühle, M. Hilpert. Optically pumped (GaIn)As/Ga(PAs) vertical-cavity surface-emitting lasers with optimized dynamics. Applied Physics Letters 74, 1367 (1999).

Patents

1. Denis Karaiskaj, Silicon-based magnetometer, US Patent 9,753,102 B1 (2017).
   
2. Denis Karaiskaj, Atomic clock using a photodetector, US Patent 9,052,698 B1 (2015).
   
3. Denis Karaiskaj, Silicon-based atomic clocks, US Patent 8,816,784 B1 (2014).