December, 2008Measuring Photodarkening from Yb Doped FibersDoctoral dissertation Joona Koponen, Helsinki University of Technology
November, 2008Hard-Soldered InGaAsP Single Emitter Diode Lasers on CTE-Matched Heatsinks Deliver Record Powerpresented at the 21th Annual Lasers and Electro Optics Society Meeting
October, 2008Next generation fiber laser pumpspresented at AHPSL 2008
August, 2008Inversion Behavior in Core- and Cladding-Pumped Yb-Doped Fiber Photodarkening Measurementspublished in Applied Optics, Vol. 47, Issue 25, pp. 4522 - 4528
Demonstration of Spatial Distribution of Photodarkening in Yb-Doped Large Mode Area Fiber Laserpublished in IEE Electronics Letters, Vol. 44, Issue 16, pp. 960 - 961
June, 2008A Micro-Channel Heat Exchanger for Electronics Cooling Applicationspresented at the 6th International Conference on Nanochannels, Microchannels, and Minichannels 2008
Progress in Fiber-Coupled, High-Brightness, High-Power Diode Laser Pump Sourcespresented at DEPS SSDLTR 2008
Improvements in Micro-Channel-Cooled High-Efficiency 885 nm Diode Laser Barspresented at DEPS SSDLTR 2008
Progress in Long-Wavelength High-Power Diode Laser Pump Sourcespresented at DEPS SSDLTR 2008
May, 2008Experimental Verification of Spatial Distribution of Photodarkening in Large Mode Area Ytterbium Doped Fiberspresented at CLEO 2008
March, 2008High-Power Diode Lasers Operating Around 1500 nm for Eyesafe Applicationspresented at SPIE Defense & Security Symposium 2008
Photodarkening Rate in Yb-Doped Silica Fiberspublished in Applied Optics, Vol. 47, Issue 9, pp. 1247-1256
Mode Control for High-Performance Laser Diode Sourcespresented at SPIE Defense & Security Symposium 2008
January, 2008Enhanced Micro-Channel Cooling for High-Power Semiconductor Diode Laserspresented at SPIE Photonics West 2008
Reliable Operation of High-Efficiency (>70%) 8xx and 9xx nm Diode Laserspresented at SPIE Photonics West 2008
November, 2006Measuring Photodarkening From Single-Mode Ytterbium Doped Silica Fiberspublished in Optics Express, Vol. 14, Issue 24, pp. 11539-11544
Diode Laser Efficiency Increases, Enables >400 W Peak Power from 1 cm Bars, Shows Clear Path to Peak Powers in Excess of 1 kWpresented at OIDA 15th Annual Forum 2006
September, 2006Nanosecond Laser-Induced Breakdown in Pure and Yb3+ Doped Fused Silicapresented at Boulder Damage Symposium 2006
DND Technology - A Core Platform for Specialty Mode Guiding Structurespresented at 2006 SPRC Symposium
Photodarkening in Large Mode Area Fiberspresented at 2nd EPS-QEOD Europhoton Conference 2006
August, 2006Linearly-Polarized Single-Transverse-Mode High-Energy Multi-Ten Nanosecond Fiber Amplifier with 50 W Average Powerpublished in Optics Express, Vol. 14, No. 17, 7604-7609
June, 2006400 W Peak CW Power per Bar from 1 cm GaAs Bars for Emission Wavelengths from 800 nm to 980 nm, 90 W at 660 nmpresented at DEPS SSDLTR 2006
May, 200685% Power Conversion Efficiency 975 nm Broad Area Diode Lasers at -50°C, 76% at 10°Cpresented at CLEO 2006
April, 2006High-Power, High-Efficiency, High-Brightness Long-Wavelength Laser Diodespresented at SPIE Defense & Security 2006
January, 2006Photodarkening Rate in Ytterbium Doped Silica Fiberspresented at SPIE Photonics West 2006
High Order Modes Suppression in Large Mode Area Active Fibers by Controlling the Radial Distribution of the Rare Earth Dopantpresented at SPIE Photonics West 2006
Diode Laser Efficiency Increases, Enables >400 W Peak Power from 1 cm Bars and Shows Clear Path to Peak Powers in Excess of 1 kWpresented at SPIE Photonics West 2006
The Potential of Direct Nanoparticle Deposition for the Next Generation of Optical Fiberspresented at SPIE Photonics West 2006
2009