Improved laser based photoluminescence on single-walled carbon nanotubes
| Autor: | Thomas Pichler, Bence G. Márkus, A. Bojtor, S. Kollarics, Philip Rohringer, Julianna Palotás, Ferenc Simon |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Photoluminescence Physics::Optics FOS: Physical sciences 02 engineering and technology Laser pumping Carbon nanotube Applied Physics (physics.app-ph) 01 natural sciences law.invention law 0103 physical sciences Radiant intensity 010302 applied physics Dye laser business.industry Physics - Applied Physics 021001 nanoscience & nanotechnology Laser Condensed Matter Physics Electronic Optical and Magnetic Materials Optoelectronics 0210 nano-technology business Lasing threshold Tunable laser Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.1905.08218 |
| Popis: | Photoluminescence (PL) has become a common tool to characterize various properties of single-walled carbon nanotube (SWCNT) chirality distribution and the level of tube individualization in SWCNT samples. Most PL studies employ conventional lamp light sources whose spectral distribution is filtered with a monochromator but this results in a still impure spectrum with a low spectral intensity. Tunable dye lasers offer a tunable light source which cover the desired excitation wavelength range with a high spectral intensity, but their operation is often cumbersome. Here, we present the design and properties of an improved dye-laser system which is based on a Q-switch pump laser. The high peak power of the pump provides an essentially threshold-free lasing of the dye laser which substantially improves the operability. It allows operation with laser dyes such as Rhodamin 110 and Pyridin 1, which are otherwise on the border of operation of our laser. Our system allows to cover the 540-730 nm wavelength range with 4 dyes. In addition, the dye laser output pulses closely follow the properties of the pump this it directly provides a time resolved and tunable laser source. We demonstrate the performance of the system by measuring the photoluminescence map of a HiPco single-walled carbon nanotubes sample. |
| Databáze: | OpenAIRE |
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