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Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 3 — Feb. 1, 2008
  • pp: 249–251

Stable gain-switched 845 nm pulse generation by a weak 1550 nm seed laser

Guanshi Qin, Takenobu Suzuki, and Yasutake Ohishi  »View Author Affiliations

Optics Letters, Vol. 33, Issue 3, pp. 249-251 (2008)

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We report what we believe to be the first demonstration of stable gain-switched 845 nm pulse generation ( Er 3 + : S 3 2 4 I 13 2 4 transition) by a weak modulated 1550 nm seed laser, from an Er 3 + -doped fluoride fiber pumped by a cw 974 nm laser diode. When the pump power of the 974 nm laser diode is set to a certain value, the injection of a weak ( < 1 mW ) modulated 1550 nm seed laser into the 845 nm lasing cavity can depopulate the lower state I 13 2 4 of 845 nm lasing, switch the gain to regulate the conventionally chaotic spiking, and generate stable synchronous 845 nm pulse trains with the repetition rate up to 100 kHz .

© 2008 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3538) Lasers and laser optics : Lasers, pulsed
(140.3613) Lasers and laser optics : Lasers, upconversion

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 31, 2007
Revised Manuscript: December 23, 2007
Manuscript Accepted: January 3, 2008
Published: January 29, 2008

Guanshi Qin, Takenobu Suzuki, and Yasutake Ohishi, "Stable gain-switched 845 nm pulse generation by a weak 1550 nm seed laser," Opt. Lett. 33, 249-251 (2008)

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