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12 results on '"Suomalainen, Soile"'

1. Sub-60 fs SESAM Mode-Locked Tm:LuYO3 Ceramic Laser

Author

Zhao, Yongguang, primary, Suomalainen, Soile, additional, Harkonen, Antti, additional, Guina, Mircea, additional, Loiko, Pavel, additional, Mateos, Xavie, additional, Griebner, Uwe, additional, Petrov, Valentin, additional, Chen, Weidong, additional, Wang, Li, additional, Pan, Zhongben, additional, Wang, Yicheng, additional, Zhang, Jian, additional, Liu, Peng, additional, Xu, Xiaodong, additional, Shen, Deyuan, additional, and Xu, Jun, additional

Published
2019
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7. High Spectral Purity High-Power GaSb-Based DFB Laser Fabricated by Nanoimprint Lithography.

Author

Viheriala, Jukka, Haring, Kimmo, Suomalainen, Soile, Koskinen, Riku, Niemi, Tapio, and Guina, Mircea

Abstract

The development of single-mode distributed feedback (DFB) lasers emitting high output powers in a broad wavelength range from 1980 to 2035 nm is reported. A unique feature of the development is the fabrication of lateral feedback gratings by nanoimprint lithography. We have varied a wide range of design parameters and studied their effect on the performance of the laser. The best uncoated devices exhibited a side-mode suppression ratio as high as $>50$ dB at output powers in excess of 14 mW. Moreover, a tuning range of over 12 nm was measured. After coating the facets with dielectric mirrors, the laser diodes could deliver an output power of more than 25 mW. In this letter, we prove the suitability of nanoimprint lithography to the fabrication of GaSb-DFB laser diodes by demonstrating the state-of-the-art devices made using imprint lithography. [ABSTRACT FROM PUBLISHER]

Published
2016
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11. Semiconductor All-Optical Modulator for Synchronization of Independent Fiber Laser Oscillators and Active Mode-Locking.

Author

Herda, Robert, Rusu, Matei, Vainionpää, Anne, Suomalainen, Soile, Tengvall, Olli, and Okhotnikov, Oleg G.

Subjects
INDUSTRIAL lasers, SEMICONDUCTOR industry, ULTRASHORT laser pulses, PICOSECOND pulses, MIRRORS, ERBIUM isotopes
Abstract

Using an optically driven nonlinear semiconductor mirror, we have synchronized a 1.56-pm mode-locked erbium fiber laser to the pulse train from a mode-locked ytterbium fiber laser operating at 1.05 pm. We demonstrate that a robust active or passive mode-locked picosecond pulse operation and tight control of the repetition rate can be obtained resulting in a large value of the locking tolerance for the slave laser cavity mismatch exceeding 250 μm. [ABSTRACT FROM AUTHOR]

Published
2005
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