Demonstration of complete gain-narrowing compensation for 100fs duration pulses with ~30nm bandwidth in Yb-doped fiber amplifier system with up to 150dB of total multi-stage gain

2021 ◽  
Author(s):  
Siyun Chen ◽  
Mathew Whittlesey ◽  
Yifan Cui ◽  
Russell Wilcox ◽  
Almantas Galvanauskas
Keyword(s):  
Fiber Amplifier ◽  
Multi Stage ◽  
Gain Narrowing

Influence of Gain Dispersion on the Propagation Characteristics of Ultrashort Optical Pulses in Distributed Fiber Amplifiers

2011 ◽  
Vol 84-85 ◽  
pp. 607-612 ◽  
Author(s):  
Xiao Hong Zhou ◽  
Ze Yong Wang ◽  
Li Wang ◽  
Xiao Rong Gao ◽  
Bin Luo
Keyword(s):  
Optical Pulse ◽  
Group Velocity Dispersion ◽  
Fiber Amplifier ◽  
Propagation Characteristics ◽  
Ultrashort Optical Pulse ◽  
Pulse Profile ◽  
Loss Mechanism ◽  
Ultrashort Optical Pulses ◽  
Gain Narrowing ◽  
Gain Dispersion

The physical model for the optical pulse propagating in the amplifier has been established. Within the normal dispersion region of the fiber, the evolution of the optical pulse in the amplifier has been simulated numerically, and the influence of gain dispersion on the propagation characteristics of the pulse has been discussed emphatically. The results show that, during the propagation of the ultrashort optical pulse in a distributed fiber amplifier, group velocity dispersion and Kerr nonlinear effect will affect the pulse profile and spectrum. For the ultrashort optical pulse with a wideband spectrum, the influence of gain spectrum on the propagation characteristics of the optical pulse, in essence, is that of gain dispersion, which is equivalent to a loss mechanism and will generate gain narrowing effect, so it should be considered in the design of an amplifier system.

scholarly journals Femtosecond Red and Near-Infrared Lasers Due to Cascaded-Raman-Assisted Four-Wave Mixing in a Nonlinear Yb-Doped Fiber Amplifier

2020 ◽  
Vol 10 (2) ◽  
pp. 669
Author(s):  
Hui Xu ◽  
Shuai Yuan ◽  
Zhengru Guo ◽  
Qingshan Zhang ◽  
Yanying Ma ◽  
...  
Keyword(s):  
Peak Power ◽  
Near Infrared ◽  
Fiber Amplifier ◽  
Four Wave Mixing ◽  
Fundamental Wave ◽  
Wave Mixing ◽  
Main Amplifier ◽  
Multiple Wavelengths ◽  
Gain Narrowing ◽  
Straightforward Approach

We demonstrated a straightforward approach to generate red and near-infrared laser emissions by a Raman-assisted four wave mixing (FWM) process in a nonlinear Yb-doped fiber amplifier, delivering 342 fs pulses of 241 nJ at 864 nm, 834 fs pulses of 21 nJ at 751 nm, and 1.9 ps pulses of 3.8 μJ at 1030 nm. A pair of gratings was employed as the pre-compressor to promote the intensity of the fundamental wave in the main amplifier. Multiple wavelengths from 751 to 1273 nm resulted due to cascaded-Raman-assisted FWM. The pre-compression also underlay the achievement of 25.1, 701, and 2000 kW peak power for the red (751 nm), near-infrared (864 nm), and fundamental (1030 nm) components respectively, which restrained the gain narrowing effect during the amplification. It finally led to shorter pulse duration under increased power.

Multi-stage erbium-doped fiber amplifier designs

1995 ◽  
Vol 13 (5) ◽  
pp. 703-720 ◽  
Author(s):  
J.-M.P. Delavaux ◽  
J.A. Nagel
Keyword(s):  
Fiber Amplifier ◽  
Erbium Doped Fiber Amplifier ◽  
Multi Stage ◽  
Erbium Doped
Sign in / Sign up

Export Citation Format

Share Document