Progress in high duty cycle, highly efficient fiber coupled 940-nm pump modules for high-energy class solid-state lasers

Author(s):  
Paul A. Crump ◽  
René Platz ◽  
Bernd Eppich ◽  
Juliane Rieprich ◽  
Arnim Ginolas ◽  
...  
Author(s):  
René Platz ◽  
Bernd Eppich ◽  
Juliane Rieprich ◽  
Wolfgang Pittroff ◽  
Götz Erbert ◽  
...  

Tailored diode laser single emitters with long (6 mm) resonators and wide (1.2 mm) emission apertures that operate with 940 nm emission wavelength were assembled in novel edge-cooled vertically stacked arrays, and used to construct a compact and highly efficient fiber coupled pump source for Yb:YAG pulsed high-energy class solid-state lasers. The novel configuration is shown to allow repetition rates of 200 Hz at 1 ms pulse duration, at an output power of 130 W per single emitter. The emission of two stacked arrays was then optically combined to realize pump modules that deliver 6 kW peak power (pulse energy 6 J) from a 1.9 mm core diameter fiber, with wall plug efficiency of 50%. This represents a significant improvement in terms of duty cycle and electro-optical efficiency over conventional sources. The pump module has been successfully tested at the Max Born Institute, Berlin during trials for pumping of disk lasers.


2015 ◽  
Author(s):  
Jörg Körner ◽  
Joachim Hein ◽  
Mirko Tiegel ◽  
Stefan Kuhn ◽  
Joachim Buldt ◽  
...  

Author(s):  
Paul A. Crump ◽  
Martin Wilkens ◽  
Marko Hübner ◽  
Seval Arslan ◽  
Markus Niemeyer ◽  
...  

2014 ◽  
Author(s):  
Jan Pilar ◽  
Pawel Sikocinski ◽  
Alina Pranowicz ◽  
Martin Divoky ◽  
P. Crump ◽  
...  

2021 ◽  
Vol 30 (10) ◽  
pp. 22-27
Author(s):  
Ho Jin MA ◽  
Ha-Neul KIM

Solid-state lasers have aroused many researchers’ interests for a variety of applications in military and industrial fields. Because of the preference for increased output power, Nd:YAG single crystals, which are the most widely used gain media, should be replaced by other more suitable candidates. Polycrystalline sesquioxide ceramics show great potential for use as gain media because their thermal and mechanical characteristics are suitable for use with high-energy laser systems. Recently, novel concepts of the gain media were also introduced. Herein, while briefly looking back on the progress of polycrystalline laser ceramics, we will discuss new interests in host materials and systems.


1972 ◽  
Vol 8 (6) ◽  
pp. 534-534
Author(s):  
J. Emmett ◽  
J. McMahon ◽  
J. Letellier ◽  
J. Trenholme

Author(s):  
Samuel Paul David ◽  
Venkatesan Jambunathan ◽  
Antonio Lucianetti ◽  
Tomas Mocek

Development of high energy laser sources with nanosecond pulses at several hertz values for repetition rate has been very attractive in recent years due to their great potential for practical applications. With the recent advancement in fabricating large size laser quality transparent ceramics, diode pumped solid-state laser generating pulse energy of 100 J at 10 Hz has been recently realized at HiLASE center using Yb:YAG ceramic with Cr:YAG cladding. This review discusses Yb based high energy lasers, specific laser geometries for efficient thermal management and the role of transparent ceramics in such diode pumped high-energy-class solid-state lasers around the world.


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