Wide-Spectrum Pulsed Fiber Laser based on Picosecond Pulse Generation Supercontinuum

2018 ◽  
Author(s):  
Lin peng ◽  
Wang Tianshu ◽  
Chen Junda ◽  
Zhang Xinmeng ◽  
Sun Zhiwen ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Wide Spectrum ◽  
Picosecond Pulse ◽  
Pulse Generation ◽  
Pulsed Fiber Laser

scholarly journals A Simple and Efficient Method to Fabricate Graphene 2D Nanomaterial into a thin Film to Serve as a Saturable a bsorber for Fiber Laser Application

2018 ◽  
Vol 7 (4.15) ◽  
pp. 298
Author(s):  
Yousif I. Hammadi ◽  
Tahreer S. Mansour
Keyword(s):  
Thin Film ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Modulation Depth ◽  
Laser Cavity ◽  
Pulse Generation ◽  
Saturable Absorbers ◽  
Polarization Insensitive ◽  
Graphene Saturable Absorber ◽  
Pulsed Fiber Laser

A passively pulsed fiber laser using saturable absorbers such as graphene has been increased dramatically in recent years. Up to now, researchers have been proposed many methods to fabricate graphene saturable absorber such as (evanescent coupling structure, electrochemical exfoliation, and mechanical exfoliation) for light pulse generation in a fiber laser. However, each of these methods has got some limitations which reduce the saturable absorber performance and restrict its range of applications. In this paper, we propose a simple but very efficient fabrication way of graphene saturable absorber by converting graphene Nano powder into a thin film using polyvinyl alcohol (PVA) as a host material. The fabricated film can then be easily sandwiched between two fiber pigtails and inserted inside the laser cavity to form the saturable absorber. when compared with other methods, this method is much preferable because it provides saturable absorber with combat structure, maximum interaction area, reasonable insertion loss, polarization insensitive, controllable concentration, and safe to handle. The fabricated graphene saturable absorber in this paper was characterized and found to have a uniform distribution of the graphene nanomaterial in the PVA and have a modulation depth of 6.1% which make it a very promising saturable absorber for ultra-fast fiber laser demonstration.  

scholarly journals Ultra short pico second chirped pulse generation using SESAM based mode-locked fiber laser

2019 ◽  
Author(s):  
Arpan Dutta
Keyword(s):  
Fiber Laser ◽  
Fiber Lasers ◽  
Short Pulse ◽  
Mode Locking ◽  
Pulse Generation ◽  
Short Pulses ◽  
Chirped Pulse ◽  
Chirped Pulse Amplification ◽  
Pulsed Fiber Laser ◽  
Ultra Short Pulse

Ultra short pulse fiber lasers are widely used in many photonic systems for industrial, biomedical and scientific applications. Popularity of these lasers rapidly developed due to increment in demand of shorter pulses for various applications like communication, ophthalmology, micromachining, medical imaging and precision metrology. Pulsed fiber laser can produce ultra short pulses in order of pico or femto second. Mode locking technique is widely used in rare earth doped fiber lasers to produce such ultra short pulses of light. In this paper, pulsed operation of fiber laser was studied experimentally at 1 micron region. Experiment on pulsed fiber laser has been done using ytterbium (Yb) doped active fiber. Using the principle of passive mode locking, a 2.3 pico-second pulse was produced at 1064nm wavelength. A semiconductor saturable absorber mirror was used to mode lock the laser. The spectral domain data showed that the pulse was not Fourier transform limited which means the pulse was chirped. Chirped pulse amplification systems exploit this pulse characteristic for power scaling of ultra-short pico- second to femto-second pulses.

scholarly journals Mode-locked dysprosium fiber laser: Picosecond pulse generation from 2.97 to 3.30 μm

APL Photonics ◽  
2018 ◽  
Vol 3 (11) ◽  
pp. 116106 ◽  
Author(s):  
R. I. Woodward ◽  
M. R. Majewski ◽  
S. D. Jackson
Keyword(s):  
Fiber Laser ◽  
Picosecond Pulse ◽  
Pulse Generation

scholarly journals Low Noise High-Energy Dissipative Soliton Erbium Fiber Laser for Fiber Optical Parametric Oscillator Pumping

2018 ◽  
Vol 8 (11) ◽  
pp. 2161 ◽  
Author(s):  
Mincheng Tang ◽  
Rezki Becheker ◽  
Pierre-Henry Hanzard ◽  
Aleksey Tyazhev ◽  
Jean-Louis Oudar ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Optical Parametric Oscillator ◽  
High Energy ◽  
Mode Locking ◽  
Picosecond Pulse ◽  
Pulse Generation ◽  
Optical Parametric ◽  
Chirped Pulses ◽  
Fiber Optical ◽  
Fiber Optical Parametric Oscillator

We report on a mode-locked erbium-doped fiber laser delivering highly-chirped pulses with several tens of nanojoules of energy around 1560 nm and its exploitation to efficiently pump a fiber optical parametric oscillator (FOPO), thus enabling picosecond pulse generation around 1700 nm. The laser cavity features a high normal dispersion and mode-locking is sustained using tailored spectral filtering combined with nonlinear polarization evolution and a semiconductor saturable absorber. Numerical simulations show that the laser dynamics is governed by a strong mode-locking mechanism compensating for the large spectral and temporal pulse evolution along the cavity. In the frame of high energy picosecond pulse generation around 1700 nm, we then demonstrate that using highly-chirped pulses as pump pulses allows for the efficient tuning of the FOPO idler wavelength between 1620 and 1870 nm. In addition, satisfying noise characteristics have been achieved both for the Er-laser and the FOPO, with respective relative intensity noises (RIN) of −154 and −140 dBc/Hz, thus paving the way for the use of such sources in ultrafast instrumentation.

Electronically tunable picosecond pulse generation from Ho3+-doped fluoride fiber laser using frequency-shifted feedback

2020 ◽  
Vol 45 (20) ◽  
pp. 5808
Author(s):  
Maria Pawliszewska ◽  
Matthew R. Majewski ◽  
Stuart D. Jackson
Keyword(s):  
Fiber Laser ◽  
Picosecond Pulse ◽  
Pulse Generation ◽  
Fluoride Fiber ◽  
Electronically Tunable
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