Passively Q-switched Tm3+, Ho3+-doped silica fiber laser using a highly nonlinear saturable absorber and dynamic gain pulse compression

Samuli Kivistö; Riku Koskinen; Jonna Paajaste; Stuart D. Jackson; Mircea Guina; Oleg G. Okhotnikov

doi:10.1364/OE.16.022058

Passively Q-switched Tm3+, Ho3+-doped silica fiber laser using a highly nonlinear saturable absorber and dynamic gain pulse compression

Samuli Kivistö^*, Riku Koskinen, Jonna Paajaste, Stuart D. Jackson, Mircea Guina, Oleg G. Okhotnikov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

64 Citations (Scopus)

Abstract

We demonstrate a compact core-pumped 2 μm Tm³⁺, Ho ³⁺-doped all-fiber laser passively Q-switched with an antimony-based saturable absorber. The 20 ns pulses are the shortest Q-switched pulses from a fiber laser operating beyond 1850 nm and were produced at a repetition rate of 57 kHz and pulse energy of 15 μJ using a short-length (4 ns) cavity. The large absorber modulation depth of ∼70% together with transient gain compression is shown to provide an efficient mechanism for Q-switched pulse shortening.

Original language	English
Pages (from-to)	22058-22063
Number of pages	6
Journal	Optics Express
Volume	16
Issue number	26
DOIs	https://doi.org/10.1364/OE.16.022058
Publication status	Published - 22 Dec 2008
Externally published	Yes

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AU - Kivistö, Samuli

AU - Koskinen, Riku

AU - Paajaste, Jonna

AU - Jackson, Stuart D.

AU - Guina, Mircea

AU - Okhotnikov, Oleg G.

PY - 2008/12/22

Y1 - 2008/12/22

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AB - We demonstrate a compact core-pumped 2 μm Tm3+, Ho 3+-doped all-fiber laser passively Q-switched with an antimony-based saturable absorber. The 20 ns pulses are the shortest Q-switched pulses from a fiber laser operating beyond 1850 nm and were produced at a repetition rate of 57 kHz and pulse energy of 15 μJ using a short-length (4 ns) cavity. The large absorber modulation depth of ∼70% together with transient gain compression is shown to provide an efficient mechanism for Q-switched pulse shortening.

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ER -

Passively Q-switched Tm3+, Ho3+-doped silica fiber laser using a highly nonlinear saturable absorber and dynamic gain pulse compression

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