Effect of periodic optical pumping on dynamics of passive mode-locked fiber laser
Effect of periodic optical pumping on dynamics of passive mode-locked fiber laser
We report on the effect of periodic optical pumping on a passively mode-locked fiber laser (MLFL) based on an erbium-doped fiber (EDF). We investigate the influence of various parameters (including average pump power into the fiber laser, the modulation frequency and duty cycle of the pump, and the polarization state of the light inside the cavity) on the transient response characteristic of the MLFL such as: relaxation oscillation (RO) build-up time (defined as the time delay from the onset of pumping to the generation of passively mode-locked pulses) and the power of the detected RF signal at the fundamental cavity-mode frequency (determined by the ring cavity length), which reflects the stability of mode-locking pulse train. We have found that the RO build-up time is inversely proportional to the average pump power while the RF power of the detected fundamental cavity mode (produced by the ring cavity) is proportional to the average pump power. A change in the duty cycle effectively leads the average pump power to vary, which in turn leads to changes in the transient response. The modulation frequency of the pump is rather related to the stability of the MLFL than its response time. Generally, the lower the modulation frequency, the more stable the mode-locked pulses generated in the fiber laser. Finally, the RO build-up time and, consequently, the pulse-generation time are highly sensitive to the state of polarization in the MLFL cavity.
84-88
Lee, Chung Ghiu
c17abfcc-5932-4dfb-929e-d0134982bb82
Kim, Joonyoung
1bc7ecfa-8ec3-4b25-bd56-4d98009defcb
Kim, Soeun
a6c47fd8-d0df-4d9d-af52-c2803aae2e29
1 October 2017
Lee, Chung Ghiu
c17abfcc-5932-4dfb-929e-d0134982bb82
Kim, Joonyoung
1bc7ecfa-8ec3-4b25-bd56-4d98009defcb
Kim, Soeun
a6c47fd8-d0df-4d9d-af52-c2803aae2e29
Lee, Chung Ghiu, Kim, Joonyoung and Kim, Soeun
(2017)
Effect of periodic optical pumping on dynamics of passive mode-locked fiber laser.
Optics Communications, 400, .
(doi:10.1016/j.optcom.2017.05.005).
Abstract
We report on the effect of periodic optical pumping on a passively mode-locked fiber laser (MLFL) based on an erbium-doped fiber (EDF). We investigate the influence of various parameters (including average pump power into the fiber laser, the modulation frequency and duty cycle of the pump, and the polarization state of the light inside the cavity) on the transient response characteristic of the MLFL such as: relaxation oscillation (RO) build-up time (defined as the time delay from the onset of pumping to the generation of passively mode-locked pulses) and the power of the detected RF signal at the fundamental cavity-mode frequency (determined by the ring cavity length), which reflects the stability of mode-locking pulse train. We have found that the RO build-up time is inversely proportional to the average pump power while the RF power of the detected fundamental cavity mode (produced by the ring cavity) is proportional to the average pump power. A change in the duty cycle effectively leads the average pump power to vary, which in turn leads to changes in the transient response. The modulation frequency of the pump is rather related to the stability of the MLFL than its response time. Generally, the lower the modulation frequency, the more stable the mode-locked pulses generated in the fiber laser. Finally, the RO build-up time and, consequently, the pulse-generation time are highly sensitive to the state of polarization in the MLFL cavity.
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e-pub ahead of print date: 18 May 2017
Published date: 1 October 2017
Identifiers
Local EPrints ID: 441704
URI: http://eprints.soton.ac.uk/id/eprint/441704
ISSN: 0030-4018
PURE UUID: 6842b476-4e54-416d-ab93-b9e0c15a4859
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Date deposited: 24 Jun 2020 16:30
Last modified: 16 Mar 2024 08:18
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Author:
Chung Ghiu Lee
Author:
Joonyoung Kim
Author:
Soeun Kim
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