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Your search keyword '"Leinonen, Tomi"' showing total 14 results
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14 results on '"Leinonen, Tomi"'

11. Narrow linewidth 1120 nm GaInAs/GaAs VECSEL for cooling Mg+ions

Author

Ranta, Sanna, Leinonen, Tomi, Tavast, Miki, Epstein, Ryan, and Guina, Mircea

Abstract

This paper presents the development and narrow-linewidth characteristics of an optically-pumped vertical external-cavity surface-emitting laser emitting light near 1120 nm. The laser development is motivated by the need to achieve narrowlinewidth, frequency-stable laser emission near 280 nm for cooling of Mg+ions. The laser is capable of emitting ~0.8 W at 1118.542 nm in a less than 300 kHz linewidth.

Published
2012
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14. Yellow-red semiconductor disk lasers for biophotonics applications

Author

Leinonen, Tomi, Härkönen, Antti, Korpijärvi, Ville-Markus, Puustinen, Janne, and Guina, Mircea

Abstract

Dilute nitride semiconductor disk lasers offer a convenient way of producing 570-650 nm radiation required in medicine and life science. These lasers can produce multi-watt powers with narrow spectra and compact footprints similar to solid state lasers. The advantage of using semiconductor gain materials is their ability to reach wavelengths that are not attainable by traditional solid state lasers. Other advantages include a wide tuning range and the possibility for electrical modulation. Here we demonstrate a narrow band (<30 MHz) yellow (589 nm) disk laser with 2.7 W output power. The gain mirror of the laser is optically pumped with an 808 nm diode laser. The emission wavelength of the laser can be tuned over several nanometers by tilting the filter inside the laser cavity.

Published
2010
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