Tag Archives: VECSEL

Multiwavelength narrow linewidth laser system for Ba+ quantum computing applications

January 31, 2024 by Modulight Content
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Published in: QUANTUM WEST SPIE 2024 Authors: Kostiantyn Nechay, Luukas Kuusela, Pekko Sipilä, Kalle Palomäki, Petteri Uusimaa  Published in: QUANTUM WEST SPIE 2024 Authors: Kostiantyn Nechay, Luukas Kuusela, Pekko Sipilä, Kalle Palomäki, Petteri Uusimaa Quantum information processing (QIP) approach based on trapped ions is a promising technology that exploits different ion species as individual qubits and qubit gates, while featuring long coherence times, high fidelity of operations, fast readout, and ion-ion gate entanglement. The practical usefulness of trapped-ion quantum computer depends on its further scaling to a large number of qubits. Meanwhile, trapped-ion quantum computer relies on a set of single-frequency lasers, utilizing Continue reading →

Narrow linewidth VECSELs for Ba+ cooling at 493 nm

January 31, 2024 by Modulight Content
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Published in: LASE SPIE 2024 Authors: Kostiantyn Nechay, Andreas Schramm, Mika Mähönen, Soile Talmila, Jussi Hämelahti, Pekko Sipilä, Kalle Palomäki, Petteri Uusimaa  Published in: LASE SPIE 2024 Authors: Kostiantyn Nechay, Andreas Schramm, Mika Mähönen, Soile Talmila, Jussi Hämelahti, Pekko Sipilä, Kalle Palomäki, Petteri Uusimaa Quantum information processing based on trapped ion technology is one of the leading platforms, heavily relying on a set of single-frequency lasers in its core operations. Narrow linewidth lasers perform atom photoionization, cooling, state-preparation and read-out. In this work we demonstrate in-house designed and fabricated optically pumped semiconductor laser gain mirror comprised of InGaAs quantum wells and GaAs/AlAs distributed Bragg reflector. We demonstrate Continue reading →

High-power VECSEL with intracavity UV generation for flow cytometry applications

January 28, 2024 by Modulight Content
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Published in: SPIE BIOS 2024 Authors: Kostiantyn Nechay, Robert Perttilä, Anna Essaulova, Petteri Uusimaa  Published in: SPIE BIOS 2024 Authors: Kostiantyn Nechay, Robert Perttilä, Anna Essaulova, Petteri Uusimaa Flow cytometry is a powerful tool allowing to perform high-dimensional cell analysis which relies on a set of lasers for fluorochrome excitation. Typical flow cytometer employs excitation laser sources at violet, green, green-yellow and red wavelengths, with an extension to UV and DUV spectral bands in order to increase the number of cell characteristics. UV laser source constitutes the single most expensive component of flow cytometers. In this work we present Continue reading →