| 1. |
- Foltynowicz, Aleksandra, 1981-, et al.
(författare)
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Sub-doppler double-resonance spectroscopy of methane using a frequency comb probe
- 2020
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Ingår i: Conference on Lasers and Electro-Optics. - : Optica Publishing Group (formerly OSA). - 9781943580767 - 9781728144184
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Konferensbidrag (refereegranskat)abstract
- We use a 3.3 µm continuous wave optical parametric oscillator as a pump and a 1.67 µm frequency comb as a probe to record 36 sub-Doppler double-resonance transitions in the 3v3 band of methane (including 26 previously unreported) with ~1.5 MHz center frequency accuracy.
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| 2. |
- Gluszek, Aleksander, et al.
(författare)
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Compact mode-locked Er-doped fiber laser for broadband cavity-enhanced spectroscopy
- 2020
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Ingår i: Applied physics. B, Lasers and optics (Print). - : Springer. - 0946-2171 .- 1432-0649. ; 126:8
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Tidskriftsartikel (refereegranskat)abstract
- We report the design and characteristics of a simple and compact mode-locked Er-doped fiber laser and its application to broadband cavity-enhanced spectroscopy. The graphene mode-locked polarization maintaining oscillator consumes less than 5 W of power. It is thermally stabilized, enclosed in a 3D printed box, and equipped with three actuators that control the repetition rate: fast and slow fiber stretchers, and metal-coated fiber section. This allows wide tuning of the repetition rate and its stabilization to an external reference source. The applicability of the laser to molecular spectroscopy is demonstrated by detecting CO(2)in air using continuous-filtering Vernier spectroscopy with absorption sensitivity of 5.5 x 10(-8)cm(-1)in 50 ms.
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| 3. |
- Krzempek, Karol, et al.
(författare)
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Compact 6.5 – 9 μm frequency comb source for fourier transform spectroscopy
- 2020
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Ingår i: Optics and Photonics for Sensing the Environment. - : The Optical Society. - 9781557528209
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Konferensbidrag (refereegranskat)abstract
- We demonstrate a compact fully-stabilized fiber-based optical frequency comb based on difference frequency generation tunable from 6.5 to 9 μm and its application to Fourier transform spectroscopy of nitrous oxide (N2O).
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| 4. |
- Krzempek, Karol, et al.
(författare)
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Mid-infrared frequency comb covering the 6.5 – 9 µm range with active output power stabilization
- 2020
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Ingår i: Proceedings <em>OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS)</em>. - : The Optical Society. - 9781557528209
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Konferensbidrag (refereegranskat)abstract
- We report a compact, actively stabilized fiber-based mid-infrared frequency comb source covering the 6.5 – 9 µm wavelength range with up to 5 mW of average output power at 125 MHz repetition frequency.
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| 5. |
- Vieira, Francisco Senna, et al.
(författare)
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Continuous-filtering Vernier spectrometer with improved design and performance
- 2020
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Ingår i: Optics InfoBase Conference Papers. - : The Optical Society. - 9781557528209
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Konferensbidrag (refereegranskat)abstract
- We present a robust cavity-enhanced comb-based spectrometer with a 6.6 GHz resolution and 60 Hz acquisition rate, based on the continuous-filtering Vernier principle, a fixed diffraction grating, a custom-made chopper wheel, and a low-bandwidth comb-cavity stabilization scheme. We measure a CO2 spectrum with 5 x 10-8 cm-1 sensitivity in 17 ms.
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| 6. |
- Vieira, Francisco Senna, et al.
(författare)
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Robust, Fast and Sensitive Near-Infrared Continuous-Filtering Vernier Spectrometer
- 2020
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Ingår i: 2020 Conference on Lasers and Electro-Optics (CLEO). - : IEEE. - 9781943580767 ; , s. 1-2
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Konferensbidrag (refereegranskat)abstract
- We present a new robust approach to cavity-enhanced comb spectroscopy based on Vernier filtering, a fixed diffraction grating, custom-made chopper wheel, and a low bandwidth comb-cavity stabilization scheme. We measure a CO2 spectrum with a few GHz resolution and 5 x 10-8 cm-1 sensitivity in 9.4 ms.
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