Tag: Photonics West

High-power tapered diode lasers utilizing monolithic gratings

Published in: SPIE OPTO 2025 Authors: Luukas Kuusela, Timo Aho, Riina Ulkuniemi, Mika Mähönen, Jussi Hämelahti, Andreas Schramm, Soile Talmila, Jarkko Liimatainen, Pekko Sipilä, Petteri Uusimaa Semiconductor lasers are small and robust devices with low power consumption and good reliability. They can be produced in a wafer scale process yielding up to thousands of devices and a large span of wavelengths can be covered

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Power scalable speckle-free multi-wavelength light engine for super-resolution microscopy

Scientific papers / 355 nm, 405 nm, 488 nm, 561 nm, 638 nm, BIOS, imaging, laser engine, microscopy, ML6600, Modulight authors, narrow linewidth, Photonics West, speckle removal, SPIE, super-resolution microscopy / March 19, 2025

Published in: SPIE BIOS 2025 Authors: Anna Essauolva, Sergei Kuehn, Visa Kaivosoja, Andrei Fedotov, Petteri Uusimaa The microscopy field has been rapidly developing lately, focusing on enhancing resolution, speed, and versatility within the imaging methods. Among several rapidly developing microscopy techniques is super-resolution microscopy, which enables surpassing of the diffraction limit of light and, thus, gives us access to

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High-power DBR lasers at elevated operation temperature

Scientific papers / 794.8 nm, Bragg reflector, DBR, DBR laser, diode laser, Distributed Bragg reflector, epitaxial material, high-power, ML6600, Modulight authors, OPTO, Photonics West, Ru D1, Rubidium, sensing, single-frequency, SPIE / March 19, 2025

Published in: SPIE OPTO 2025 Authors: Luukas Kuusela, Timo Aho, Riina Ulkuniemi, Mika Mähönen, Jussi Hämelahti, Andreas Schramm, Soile Talmila, Jarkko Liimatainen, Pekko Sipilä, Petteri Uusimaa Various commercial fieldable sensing applications require compact, robust, and stable single-frequency laser sources. Distributed Bragg reflector (DBR) lasers enable single-frequency operation without an external cavity and alignmentsensitive components. This makes them the solution of choice for compact and

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Recent advances in visible AlGaInP laser diodes

Scientific papers / 632.8 nm, 650 nm, AlGaInP, AR/VR, biomedical, DBR, DBR laser, digital printing, diode laser, display, Distributed Bragg reflector, GaAs, HeNe alternative, high-power, Modulight authors, OPTO, Photonics West, quantum, quantum computing, red laser, single-frequency, single-mode, SPIE / March 19, 2025

Published in: SPIE OPTO 2025 Authors: R. Ulkuniemi, A. Schramm, S. Talmila, M. Mähönen, L. Kuusela, T. Aho, J. Hämelahti, V. Vilokkinen, P. Sipilä, P. Uusimaa Visible red laser diodes are mostly based on AlGaInP material systems, grown on GaAs. The challenges in manufacturing of the diodes are found in thermal behavior, facet stability, and doping, which must be solved for reaching the best

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