Niklas Waasem,1 Jetinny Ngo,2 Milan Zeman,2 Jens Kießling,3 Frank Kühnemann,3 Korbinian Hens4
1HÜBNER Photonics GmbH (Germany) 2HÜBNER Photonics Inc. (United States) 3Fraunhofer Institute for Physical Measurement Techniques, IPM (Germany) 4HÜBNER GmbH & Co KG (Germany)
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Researchers around the world focus on the search for the perfect quantum system suitable for applications of ‘quantum technology 2.0’. Those range from quantum sensing, via communication to computing using qubits. Even though these applications are based on quantum effects, their diversity brings with them a variety of different requirements on the ideal quantum systems. A prominent class of quantum systems are defect centers in solid-state materials. They have been found to represent quantum systems that are precisely measurable and controllable, while being almost unaffected by their environment. Characterization of the different systems at various ambient conditions using photoluminescence excitation (PLE) spectroscopy techniques helps identifying the right quantum system for the respective target application. In this context we discuss the design and unique performance characteristics of widely tunable CW optical parametric oscillators as novel laser light sources for PLE.
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