scholarly journals Highly efficient Q-switched Yb:YAG channel waveguide laser with 56  W of average output power

2016 ◽  
Vol 41 (20) ◽  
pp. 4715 ◽  
Author(s):  
Sargis Hakobyan ◽  
Valentin J. Wittwer ◽  
Kore Hasse ◽  
Christian Kränkel ◽  
Thomas Südmeyer ◽  
...  
Keyword(s):  
Output Power ◽  
Average Output Power ◽  
Channel Waveguide ◽  
Waveguide Laser ◽  
Average Output ◽  
Highly Efficient

5.3 W average output power MHz Q-switched Yb:YAG channel waveguide laser delivering ~1 μJ pulse energy

2016 ◽  
Author(s):  
Sargis Hakobyan ◽  
Valentin J. Wittwer ◽  
Kore Hasse ◽  
Christian Kränkel ◽  
Thomas Südmeyer ◽  
...  
Keyword(s):  
Output Power ◽  
Pulse Energy ◽  
Average Output Power ◽  
Channel Waveguide ◽  
Waveguide Laser ◽  
Average Output

AlGaN/GaN-based power amplifiers for mobile radio applications: a review from the system supplier's perspective

2010 ◽  
Vol 2 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Dirk Wiegner ◽  
Gerhard Luz ◽  
Patrick Jüschke ◽  
Robin Machinal ◽  
Thomas Merk ◽  
...  
Keyword(s):  
Output Power ◽  
Power Amplifiers ◽  
Average Output Power ◽  
Mobile Radio ◽  
High Electron ◽  
Digital Predistortion ◽  
Average Output ◽  
Highly Efficient ◽  
Single Carrier ◽  
Code Division Multiple

This paper gives a summarized overview on the progress and achievements on AlGaN/GaN high electron mobility transistors (HEMT)-based power amplifiers (PAs) for mobile radio applications which have been achieved within two national funded German projects during a period of six years. Starting with a first 34 dBm (2.5 W, peak) amplifier in 2003 the impressive progress toward highly efficient S-band mobile radio PAs with up to >50 dBm (100 W) peak output power is described by means of some selected single- and multiband amplifier demonstrators. This progress has been mainly enabled by clear progress on GaN technology, device packaging, and PA design. Targeting at highly efficient single-band amplifier applications, a 2.7 GHz symmetrical Doherty amplifier with up to 45% drain efficiency at close to 45 dBm average output power under single-carrier W-CDMA (Wideband Code Division Multiple Access) operation using digital predistortion can be highlighted. In case of multiband capable amplifiers addressing software-defined radio applications, a class-AB-based demonstrator covering a frequency range from 1.8 to 2.7 GHz was realized. The amplifier showed >30% drain efficiency up to 2.5 GHz as well as up to 40 dBm average output power under single-carrier W-CDMA operation using proprietary digital predistortion. Finally, Alcatel-Lucent's activities on envelope tracking for future efficiency improved GaN-based amplifiers are described.

Highly efficient optically pumped vertical-emitting semiconductor laser with more than 20 W average output power in a fundamental transverse mode

2008 ◽  
Vol 33 (22) ◽  
pp. 2719 ◽  
Author(s):  
B. Rudin ◽  
A. Rutz ◽  
M. Hoffmann ◽  
D. J. H. C. Maas ◽  
A.-R. Bellancourt ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Output Power ◽  
Average Output Power ◽  
Transverse Mode ◽  
Optically Pumped ◽  
Average Output ◽  
Highly Efficient

Copper laser with high-average-output power

1995 ◽  
Author(s):  
Nikola V. Sabotinov ◽  
Chris E. Little
Keyword(s):  
Output Power ◽  
Average Output Power ◽  
Average Output

Diode-pumped passively mode-locked Nd:KGd(WO_4)_2 laser with 1-W average output power

2002 ◽  
Vol 27 (16) ◽  
pp. 1478 ◽  
Author(s):  
A. Major ◽  
N. Langford ◽  
T. Graf ◽  
D. Burns ◽  
A. I. Ferguson
Keyword(s):  
Output Power ◽  
Average Output Power ◽  
Average Output ◽  
Diode Pumped

SM green fiber laser operating in CW and QCW regimes and producing over 550W of average output power

2014 ◽  
Author(s):  
Valentin Gapontsev ◽  
Alexey Avdokhin ◽  
Pankaj Kadwani ◽  
Igor Samartsev ◽  
Nikolai Platonov ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Average Output Power ◽  
Average Output

Linearly polarized Q-switched pulse Yb fiber laser with average output power over 10 W

2009 ◽  
Vol 6 (6) ◽  
pp. 461-464 ◽  
Author(s):  
Y.X. Wang ◽  
D.Z. Yang ◽  
P.P. Jiang ◽  
Y.H. Shen
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Average Output Power ◽  
Average Output ◽  
Linearly Polarized
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