Fiber Lasers
Bill Konyk
A Low Power Laser: 900 mW
‘Low Power Laser’ (15 sec)
http://www.wickedlasers.com/krypton
Basic Operation
http://www.orc.soton.ac.uk/61.html
Ytterbium
Effective three level
1-1.2 μm output
Erbium also common
1.5- 2 μm output
http://www.rp-photonics.com/ytterbium_doped_gain_media.html
Bragg Gratings
Periodic structures
Tunable for desired
frequency
http://en.wikipedia.org/wiki/Fiber_Bragg_grating
Pumping Mechanism
Pumping in 9xx nm range
Diode pumping common
http://www.laserfocusworld.com/articles/print/volume-48/issue-04/features/the-state-of-the-art.html
Fiber Structure
Reference 6
Output Power
Max: 100 kW single mode (1999)
Reference 6
Types of Operation
Femtosecond pulses
Q-Switching for medium pulses
Continuous Wave
Single mode
Multi mode
Advantages
High power and efficiency
All fiber design
Little thermal broadening
Tunability
CW and Pulsed
Single and Multimode operation
Sources of Broadening
Nonlinearities:
Four Wave Mixing
Stimulated Brillouin Scattering
Self Phase Modulation
Dispersion from glass
IPG YLS Series
500W-50 kW
Single and Multimode
CW
Wall Plug Efficiency >30%
Demonstration
http://www.ipgphotonics.com/apps_materials_multi_yls.htm
Military Applications
http://www.lockheedmartin.com/us/news/press-releases/2015/march/ssc-space-athena-laser.html
Laser Weapons System
Navy LaWS
http://www.laserfocusworld.com/articles/print/volume-48/issue04/features/the-state-of-the-art.html
Other Applications
Drilling Concrete
Nano machining and surface ablation
LASIK
Femtosecond frequency combs
Tunable Lasers
Outlook: IPG YLS Death Star
Current Death Star
would be the size of
Jupiter
Or it would take about
6 months to output
enough power
Sources
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Hecht, Jeff. "FIBER LASERS: Fiber Lasers: The State of the Art." Laser Focus World. Accessed April 22, 2015. http://www.
laserfocusworld.com/articles/print/volume-48/issue-04/features/the-state-of-the-art.html.
"YLS Series." IPG Photonics. Accessed April 22, 2015. http://www.ipgphotonics.com/apps_materials_multi_yls.htm.
"How Fibre Lasers Work." Optoelectronics Research Centre. Accessed April 22, 2015. http://www.orc.soton.ac.uk/61.html.
"Turning Up The Heat: Latest Evolution Of Lockheed Martin Laser Weapon System Stops Truck In Field Test." · Lockheed Martin.
Accessed April 22, 2015. http://www.lockheedmartin.com/us/news/press-releases/2015/march/ssc-space-athena-laser.html.
Turan, Erdogan. "Fiber Grating Spectra." Journal of Lightwave Technology 15, no. 8 (1997). Accessed May 22, 2015. http://ieeexplore.ieee.
org/stamp/stamp.jsp?tp=&arnumber=618322&tag=1.
Richardson, D. J., J. Nilsson, and W. A. Clarkson. "High Power Fiber Lasers: Current Status and Future Perspectives [Invited]." Opt. Soc.
Am. B 27, no. 11 (2010): B63-89.
"MFL-448." - CW Fiber Lasers from Bktel. Accessed April 22, 2015. http://www.rpmclasers.com/solid-state-lasers/fiber-lasers-1um-15um/cw-fiber-lasers-1um-and-1-5um/mfl-448.
"Single Mode vs. Multi-Mode Fiber Optic Cable | Multicom." Multicom. Accessed April 22, 2015. http://www.multicominc.
com/training/technical-resources/single-mode-vs-multi-mode-fiber-optic-cable/.
"Fiber Lasers." Encyclopedia of Laser Physics and Technology. Accessed April 22, 2015. http://www.rp-photonics.com/fiber_lasers.html.
"Ytterbium-doped Gain Media." Encyclopedia of Laser Physics and Technology. Accessed April 22, 2015. http://www.rp-photonics.
com/ytterbium_doped_gain_media.html.
More Sources
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"Self-phase Modulation." Encyclopedia of Laser Physics and Technology. Accessed April 22, 2015. http://www.rp-photonics.
com/self_phase_modulation.html.
"Milestone-Nomination:First Optical Fiber Laser and Amplifier." - Engineering and Technology History Wiki. Accessed April 22, 2015.
http://ethw.org/Milestone-Nomination:First_Optical_Fiber_Laser_and_Amplifier.
"Photodarkening." Encyclopedia of Laser Physics and Technology. Accessed April 22, 2015. http://www.rp-photonics.com/photodarkening.
html.
Aso, Osamu, Masateru Tadakuma, and Shu Namiki. "Four-Wave Mixing in Optical Fibers and Its Applications." Furukawa Review 19
(2000).
Lapointe, Marc-André, and Michel Piché. "Linewidth of High-power Fiber Lasers." Proc. of SPIE 7386, no. 73860S.
Zhu, Tao, Shihong Huang, Leilei Shi, Wei Huang, Lei Gao, and Baomei Zhang. "Ultra-narrow Linewidth Fiber Laser with Self-injection
Feedback Based on Rayleigh Backscattering." On Arxiv. http://arxiv.org/pdf/1401.1661.pdf.
Questions