scholarly journals Development of a Thulium Fiber Laser for an Atomic Spectroscopy Experiment

Fibers ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 12
Author(s):  
Ronnie Currey ◽  
Ali Khademian ◽  
David Shiner
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Background Level ◽  
Atomic Spectroscopy ◽  
Laser Source ◽  
Spectroscopy Experiment ◽  
Simplified Analysis ◽  
Level 1 ◽  
Thulium Fiber Laser ◽  
Atomic Helium

A convenient thulium fiber laser source is described with 3 W of output power operating at a wavelength of 2059 nm with a slope efficiency of 49% with respect to input pump power and 60% with respect to absorbed pump power. The laser was applied in an atomic helium spectroscopy experiment to quench 3He (2058.63 nm) and 4He (2058.69 nm) meta-stable singlets (21S0), allowing for further investigation of the helium fine structure. The customized laser effectively eliminates the singlet counts to well below a background level (1%). A simplified analysis describes the basic laser performance with fitted constants in reasonable agreement with previous work.

Graphene based Q-switched tunable S-band fiber laser incorporating arrayed waveguide gratings (AWG)

2014 ◽  
Vol 23 (01) ◽  
pp. 1450004 ◽  
Author(s):  
F. D. Muhammad ◽  
M. Z. Zulkifli ◽  
H. Ahmad
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Pulse Duration ◽  
Repetition Rate ◽  
Tunable Laser ◽  
Laser Cavity ◽  
Laser Source ◽  
Arrayed Waveguide Gratings ◽  
Waveguide Gratings ◽  
Arrayed Waveguide

We present in this paper, the result of successful fabrication of a novel graphene-based Q-switched fiber laser in the S-band region using an arrayed waveguide gratings (AWGs). The S-band lasing is realized by employing a depressed-cladding erbium doped fiber (DC-EDF), as the gain medium. A new ferrule-to-ferrule and stepwise optical extraction method is introduced and employed for depositing the thin graphene layer within the fiber laser cavity as the saturable absorber, while a tunable laser source (TLS) is used for depositing graphene onto the fiber ferrule. A demonstration of performance characteristics of this device is presented showing a Q-switched threshold of 65.29 mW and a range of repetition rate from 73.6 kHz to 331.1 kHz, with a linear increment. Minimum pulse duration of 1.218 μs is obtained at a pump power of 100.44 mW. Additional measurements are performed on the characteristics of the output power, pulse duration, pulse repetition rate, pulse energy, and peak power with respect to the pump power.

Increasing the Format-Flexibility of Packaging Machines: Experimental Study on Laser Beam Sealing and Cutting

2016 ◽  
Vol 856 ◽  
pp. 201-208 ◽  
Author(s):  
Georg Götz ◽  
Johannes Fink ◽  
Christoph Richter ◽  
Gunther Reinhart
Keyword(s):  
Experimental Study ◽  
Energy Efficiency ◽  
Experimental Investigation ◽  
Laser Beam ◽  
Fiber Laser ◽  
Laser Source ◽  
Processing Technologies ◽  
Diode Pumped ◽  
Thulium Fiber Laser ◽  
Processing Device

The improvements of the format-flexibility as well as the resource and energy efficiency are important for the users and manufacturers of packaging machines. There is a positive interconnection of resource and energy efficiency with format-flexibility because e.g. the reduction of stand-by phases. To reach these goals, it is necessary to reduce the downtime and to increase the overall equipment effectiveness (OEE). The application of laser beam based processing technologies is very common in many different branches, e.g. automotive. One big advantage of the laser beam as a working tool is the high inherent flexibility. Different contours could be sealed and cut without any changeover by the use of flexible motion systems, e.g. deflection units or robots. However, there is a lack of use of laser based technologies in packaging machines. The focus of this paper is the experimental investigation of laser beam sealing and cutting with the same laser source. For this a 2 μm diode-pumped thulium fiber laser is used. Furthermore a flexible processing device will be shown and the practical use will be demonstrated.

Pulsed blue laser source based on frequency quadrupling of a thulium fiber laser

2013 ◽  
Author(s):  
Eric Honea ◽  
Matthias Savage-Leuchs ◽  
Mark S. Bowers ◽  
Tolga Yilmaz ◽  
Roy Mead
Keyword(s):  
Fiber Laser ◽  
Blue Laser ◽  
Laser Source ◽  
Thulium Fiber Laser

Optimization of L-Band Ring Cavity Brillouin Erbium Fiber Laser

2015 ◽  
Vol 815 ◽  
pp. 380-383
Author(s):  
N. Roshidah Yusof ◽  
N.A.M. Ahmad Hambali ◽  
R. Othman ◽  
W. Mokhzani ◽  
M.H.A. Wahid
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Output Power ◽  
Ring Cavity ◽  
Wavelength Region ◽  
Tunable Laser ◽  
Gain Medium ◽  
Laser Source ◽  
Source Power ◽  
L Band

In this paper, the performance of ring cavity Brillouin Erbium fiber laser (BEFL) within L-band wavelength region are discussed. Introducing Erbium doped fiber as a secondary gain medium into conventional Brillouin fiber laser configuration is the best alternative to maximize the Brillouin Stokes power (output power) and to sustain the gain flatness. Few parameters comprising length of fiber, pump power and tunable laser source power are varied to obtain the optimum output power. From the simulation process, a maximum Brillouin Stokes power of 54.75 dBm is produced as 16 dBm Brillouin pump power and 1480 nm pump laser are injected to the configuration.

Fiber laser source/analyzer for Bragg grating sensor array interrogation

1994 ◽  
Vol 12 (4) ◽  
pp. 700-703 ◽  
Author(s):  
G.A. Ball ◽  
W.W. Morey ◽  
P.K. Cheo
Keyword(s):  
Fiber Laser ◽  
Sensor Array ◽  
Laser Source ◽  
Bragg Grating ◽  
Bragg Grating Sensor

scholarly journals Mid-infrared photoacoustic gas monitoring driven by a gas-filled hollow-core fiber laser

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yazhou Wang ◽  
Yuyang Feng ◽  
Abubakar I. Adamu ◽  
Manoj K. Dasa ◽  
J. E. Antonio-Lopez ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Signal To Noise Ratio ◽  
High Sensitivity ◽  
Laser Source ◽  
High Signal ◽  
Mid Infrared ◽  
Raman Fiber Laser ◽  
Custom Made ◽  
Core Fiber ◽  
Detection Technologies

AbstractDevelopment of novel mid-infrared (MIR) lasers could ultimately boost emerging detection technologies towards innovative spectroscopic and imaging solutions. Photoacoustic (PA) modality has been heralded for years as one of the most powerful detection tools enabling high signal-to-noise ratio analysis. Here, we demonstrate a novel, compact and sensitive MIR-PA system for carbon dioxide (CO2) monitoring at its strongest absorption band by combining a gas-filled fiber laser and PA technology. Specifically, the PA signals were excited by a custom-made hydrogen (H2) based MIR Raman fiber laser source with a pulse energy of ⁓ 18 μJ, quantum efficiency of ⁓ 80% and peak power of ⁓ 3.9 kW. A CO2 detection limit of 605 ppbv was attained from the Allan deviation. This work constitutes an alternative method for advanced high-sensitivity gas detection.

scholarly journals Super-pulse thulium-fiber laser for lithotripsy: First clinical experience in percutaneous nephrolithotomy

2020 ◽  
Vol 19 ◽  
pp. e350
Author(s):  
D. Enikeev ◽  
M. Taratkin ◽  
Y. Alyaev ◽  
L. Rapoport ◽  
D. Korolev ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Clinical Experience ◽  
Percutaneous Nephrolithotomy ◽  
Thulium Fiber Laser
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