Articles

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  1. Karol Krzempek.
    Sensitive mid-infrared photothermal gas detection enhanced by self-heterodyne harmonic amplification of a mode-locked fiber laser probe. Optics Express 30(17):31354–31366, 2022.

  2. Piotr Bojęś, Piotr Pokryszka, Piotr Jaworski, Fei Yu, Dakun Wu and Karol Krzempek.
    Quartz-Enhanced Photothermal Spectroscopy-Based Methane Detection in an Anti-Resonant Hollow-Core Fiber. Sensors 22(15):5504, 2022.

  3. Piotr Jaworski, Karol Krzempek, Piotr Bojęś, Dakun Wu and Fei Yu.
    Mid-IR antiresonant hollow-core fiber based chirped laser dispersion spectroscopy of ethane with parts per trillion sensitivity. Optics & Laser Technology 156:108539, 2022.

  4. Piotr Bojęś, Piotr Jaworski, Karol Krzempek, Ziemowit Malecha, Fei Yu, Dakun Wu, Paweł Kozioł, Grzegorz Dudzik, Meisong Liao and Krzysztof Abramski.
    Experimental and numerical analysis of gas flow in nodeless antiresonant hollow-core fibers for optimization of laser gas spectroscopy sensors. Optics & Laser Technology 152:108157, 2022.

  5. Matthias Germann, Adrian Hjältén, Vincent Boudon, Cyril Richard, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Głuszek, Grzegorz Soboń and Aleksandra Foltynowicz.
    A methane line list with sub-MHz accuracy in the 1250 to 1380 cm- 1 range from optical frequency comb Fourier transform spectroscopy. Journal of Quantitative Spectroscopy and Radiative Transfer 288:108252, 2022.

  6. Karol Krzempek, Piotr Jaworski, Piotr Bojęś and Paweł Kozioł.
    Photothermal gas detection using a mode-locked laser signal readout. Journal of Lightwave Technology 40(13):4436–4442, 2022.

  7. Piotr Jaworski, Karol Krzempek, Paweł Kozioł, Dakun Wu, Fei Yu, Piotr Bojęś, Grzegorz Dudzik, Meisong Liao, Jonathan Knight and Krzysztof Abramski.
    Sub parts-per-billion detection of ethane in a 30-meters long mid-IR Antiresonant Hollow-Core Fiber. Optics & Laser Technology 147:107638, 2022.

  8. Adrian Hjalten, Matthias Germann, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Dorota Tomaszewska, Grzegorz Sobon and Aleksandra Foltynowicz.
    Optical frequency comb Fourier transform spectroscopy of (N2O)-N-14-O-16 at 7.8 mu m. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 271, 2021.

  9. Paweł Kozioł, Piotr Jaworski, Karol Krzempek, Viktoria Hoppe, Grzegorz Dudzik, Fei Yu, Dakun Wu, Meisong Liao, Jonathan Knight and Krzysztof Abramski.
    Fabrication of microchannels in a nodeless antiresonant hollow-core fiber using femtosecond laser pulses. Sensors 21(22):7591, 2021.

  10. Karol Krzempek.
    Part-per-billion level photothermal nitric oxide detection at 5.26 µm using antiresonant hollow-core fiber-based heterodyne interferometry. Optics Express 29(20):32568–32579, 2021.

  11. Karol Krzempek, Dorota Tomaszewska, Aleksandra Foltynowicz and Grzegorz Sobon.
    Fiber-based optical frequency comb at 3.3 µm for broadband spectroscopy of hydrocarbons. Chinese Optics Letters 19(8):081406, 2021.

  12. Arkadiusz Hudzikowski, Aleksander Głuszek, Karol Krzempek and Jarosław Sotor.
    Compact, spherical mirror-based dense astigmatic-like pattern multipass cell design aided by a genetic algorithm. Optics Express 29(16):26127–26136, 2021.

  13. Karol Krzempek, Piotr Jaworski, Paweł Kozioł and Walter Belardi.
    Antiresonant hollow core fiber-assisted photothermal spectroscopy of nitric oxide at 5.26 µm with parts-per-billion sensitivity. Sensors and Actuators B: Chemical 345:130374, 2021.

  14. Adrian Hjältén, Matthias Germann, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Głuszek, Dorota Tomaszewska, Grzegorz Soboń and Aleksandra Foltynowicz.
    Optical frequency comb Fourier transform spectroscopy of 14N216O at 7.8 µm. Journal of Quantitative Spectroscopy and Radiative Transfer 271:107734, 2021.

  15. Grzegorz Dudzik, Karol Krzempek, Krzysztof Abramski and Gerard Wysocki.
    Solid-state laser intra-cavity photothermal gas sensor. Sensors and Actuators B: Chemical 328:129072, 2021.

  16. Piotr Jaworski, Paweł Kozioł, Karol Krzempek, Dakun Wu, Fei Yu, Piotr Bojęś, Grzegorz Dudzik, Meisong Liao, Krzysztof Abramski and Jonathan Knight.
    Antiresonant hollow-core fiber-based dual gas sensor for detection of methane and carbon dioxide in the near-and mid-infrared regions. Sensors 20(14):3813, 2020.

  17. Piotr Jaworski, Karol Krzempek, Grzegorz Dudzik, Pier J Sazio and Walter Belardi.
    Nitrous oxide detection at 5.26 µm with a compound glass antiresonant hollow-core optical fiber. Optics letters 45(6):1326–1329, 2020.

  18. Karol Krzempek, Dorota Tomaszewska, Aleksander Głuszek, Tadeusz Martynkien, Paweł Mergo, Jarosław Sotor, Aleksandra Foltynowicz and Grzegorz Soboń.
    Stabilized all-fiber source for generation of tunable broadband fCEO-free mid-IR frequency comb in the 7–9 µm range. Optics Express 27(26):37435–37445, 2019.

  19. Karol Krzempek, Krzysztof Abramski and Michal Nikodem.
    Kagome hollow core fiber-based mid-infrared dispersion spectroscopy of methane at sub-ppm levels. Sensors 19(15):3352, 2019.

  20. Karol Krzempek.
    A review of photothermal detection techniques for gas sensing applications. Applied Sciences 9(14):2826, 2019.

  21. Karol Krzempek, Grzegorz Dudzik and Krzysztof Abramski.
    Photothermal spectroscopy of CO 2 in an intracavity mode-locked fiber laser configuration. Optics express 26(22):28861–28871, 2018.

  22. Grzegorz Dudzik, Karol Krzempek and Krzysztof M Abramski.
    Photothermal-induced frequency stabilization of a solid-state monolithic Nd: YVO4 laser. Laser Physics Letters 15(10):105002, 2018.

  23. Michał Nikodem, Karol Krzempek, Grzegorz Dudzik and Krzysztof Abramski.
    Hollow core fiber-assisted absorption spectroscopy of methane at 3.4 µm. Optics Express 26(17):21843–21848, 2018.

  24. Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Głuszek, Grzegorz Dudzik, Krzysztof Abramski, Gerard Wysocki and Michał Nikodem.
    Multi-pass cell-assisted photoacoustic/photothermal spectroscopy of gases using quantum cascade laser excitation and heterodyne interferometric signal detection. Applied Physics B 124:1–6, 2018.

  25. Karol Krzempek, Grzegorz Dudzik, Krzysztof Abramski, Gerard Wysocki, Piotr Jaworski and Michał Nikodem.
    Heterodyne interferometric signal retrieval in photoacoustic spectroscopy. Optics express 26(2):1125–1132, 2018.

  26. Michal Nikodem, Karol Krzempek, Dorota Stachowiak and Gerard Wysocki.
    Quantum cascade laser-based analyzer for hydrogen sulfide detection at sub-parts-per-million levels. Optical Engineering 57(1):011019–011019, 2018.

  27. Karol Krzempek, Dorota Tomaszewska and Krzysztof M Abramski.
    Dissipative soliton resonance mode-locked all-polarization-maintaining double clad Er: Yb fiber laser. Optics express 25(21):24853–24860, 2017.

  28. K Krzempek, G Dudzik, A Hudzikowski, A Gluszek and K Abramski.
    Highly-efficient fully-fiberized mid-infrared differential frequency generation source and its application to laser spectroscopy. Opto-Electronics Review 25(4):269–274, 2017.

  29. K Krzempek, KM Abramski and M Nikodem.
    All-fiber mid-infrared difference frequency generation source and its application to molecular dispersion spectroscopy. Laser Physics Letters 14(9):095702, 2017.

  30. K Krzempek and K Abramski.
    6.5 μJ pulses from a compact dissipative soliton resonance mode-locked erbium–ytterbium double clad (DC) laser. Laser Physics Letters 14(1):015101, 2016.

  31. Karol Krzempek, Jaroslaw Sotor and Krzysztof Abramski.
    Compact all-fiber figure-9 dissipative soliton resonance mode-locked double-clad Er: Yb laser. Optics letters 41(21):4995–4998, 2016.

  32. Karol Krzempek and Krzysztof Abramski.
    Dissipative soliton resonance mode-locked double clad Er: Yb laser at different values of anomalous dispersion. Optics Express 24(20):22379–22386, 2016.

  33. Karol Krzempek, Grzegorz Sobon, Jaroslaw Sotor and Krzysztof Abramski.
    A dual-wavelength amplifier that enables the simultaneous chirped-pulse amplification of femtosecond 1562 nm pulses and continuous wave 1064 nm radiation for applications in difference frequency generation. Laser Physics Letters 13(10):105107, 2016.

  34. Grzegorz Sobon, Karol Krzempek, Jan Tarka and Jaroslaw Sotor.
    Compact, all-PM fiber-CPA system based on a chirped volume Bragg grating. Laser Physics 26(1):015106, 2015.

  35. Karol Krzempek, Grzegorz Sobon, Jaroslaw Sotor and Krzysztof M Abramski.
    Fully-integrated dual-wavelength all-fiber source for mode-locked square-shaped mid-IR pulse generation via DFG in PPLN. Optics Express 23(25):32080–32086, 2015.

  36. Karol Krzempek.
    Dissipative soliton resonances in all-fiber Er-Yb double clad figure-8 laser. Optics Express 23(24):30651–30656, 2015.

  37. Karol Krzempek, Grzegorz Sobon, Jaroslaw Sotor, Grzegorz Dudzik and Krzysztof M Abramski.
    Widely tunable, all-polarization maintaining, monolithic mid-infrared radiation source based on differential frequency generation in PPLN crystal. Laser Physics Letters 11(10):105103, 2014.

  38. Michal Nikodem, Karol Krzempek, Renata Karwat, Grzegorz Dudzik, Krzysztof Abramski and Gerard Wysocki.
    Chirped laser dispersion spectroscopy with differential frequency generation source. Optics Letters 39(15):4420–4423, 2014.

  39. M Nikodem, K Krzempek, K Zygadlo, G Dudzik, A Waz, K Abramski and K Komorowska.
    Intracavity polarization control in mode-locked Er-doped fibre lasers using liquid crystals. Opto-Electronics Review 22(2):113–117, 2014.

  40. Grzegorz Sobon, Mariusz Klimczak, Jaroslaw Sotor, Karol Krzempek, Dariusz Pysz, Ryszard Stepien, Tadeusz Martynkien, Krzysztof M Abramski and Ryszard Buczynski.
    Infrared supercontinuum generation in soft-glass photonic crystal fibers pumped at 1560 nm. Optical Materials Express 4(1):7–15, 2014.

  41. G Sobon, J Sotor, I Pasternak, K Krzempek, W Strupinski and KM Abramski.
    A tunable, linearly polarized Er-fiber laser mode-locked by graphene/PMMA composite. Laser Physics 23(12):125101, 2013.

  42. Karol Krzempek, Grzegorz Sobon and Krzysztof M Abramski.
    DFG-based mid-IR generation using a compact dual-wavelength all-fiber amplifier for laser spectroscopy applications. Optics express 21(17):20023–20031, 2013.

  43. Karol Krzempek, Grzegorz Sobon, Pawel Kaczmarek and Krzysztof M Abramski.
    A sub-100 fs stretched-pulse 205 MHz repetition rate passively mode-locked Er-doped all-fiber laser. Laser Physics Letters 10(10):105103, 2013.

  44. Karol Krzempek, Mohammad Jahjah, Rafał Lewicki, Przemysław Stefański, Stephen So, David Thomazy and Frank K Tittel.
    CW DFB RT diode laser-based sensor for trace-gas detection of ethane using a novel compact multipass gas absorption cell. Applied Physics B 112:461–465, 2013.

  45. G Sobon, K Krzempek, P Kaczmarek and KM Abramski.
    An eye-safe, high-repetition rate single-mode femtosecond chirped pulse amplification system at 1560 nm. Laser Physics 23(7):075104, 2013.

  46. G Sobon, J Sotor, I Pasternak, W Strupinski, K Krzempek, P Kaczmarek and KM Abramski.
    Chirped pulse amplification of a femtosecond Er-doped fiber laser mode-locked by a graphene saturable absorber. Laser Physics Letters 10(3):035104, 2013.