Recent advances in onshore produced ceramic laser gain materials

2006 ◽  
Author(s):  
Jean C. Huie ◽  
Richard Gentilman ◽  
Todd Stefanik ◽  
Derrick Rockosi
Keyword(s):  
Laser Gain ◽  
Recent Advances ◽  
Ceramic Laser

Co-casting and optical characteristics of transparent segmented composite Er:YAG laser ceramics

2010 ◽  
Vol 25 (3) ◽  
pp. 476-483 ◽  
Author(s):  
Elizabeth R. Kupp ◽  
Gary L. Messing ◽  
Julie M. Anderson ◽  
Venkatraman Gopalan ◽  
John Q. Dumm ◽  
...  
Keyword(s):  
Er:Yag Laser ◽  
Casting Process ◽  
Composite Ceramic ◽  
Laser Operation ◽  
Lasing Wavelength ◽  
Laser Gain ◽  
Composite Rod ◽  
Ceramic Laser ◽  
Transparent Composite ◽  
First Time

A novel colloidal co-casting process was developed to fabricate laser quality, multisegment composite ceramic laser gain materials. The approach was demonstrated for a three segment transparent composite rod 62 mm long by 3 mm diameter consisting of undoped yttrium aluminus garnet (YAG), 0.25% Er:YAG, and 0.5% Er:YAG. The Er concentration profile in the composite has steep, controllable gradients at the segment interfaces, while maintaining constant dopant concentrations within each segment. The composite rod has 84% transmittance at 1645 nm (the lasing wavelength) with a scatter loss of 0.4% cm−1. Laser operation of such a composite Er:YAG ceramic rod was demonstrated for the first time, with nearly equivalent lasing behavior to an Er:YAG single crystal rod.

3D printed ceramic laser gain media

2021 ◽  
Author(s):  
Zachary M. Seeley ◽  
Nerine Cherepy ◽  
Thomas Rudzik ◽  
Ian Phillips ◽  
Alexander Drobshoff ◽  
...  
Keyword(s):  
Laser Gain ◽  
3D Printed ◽  
Ceramic Laser ◽  
Gain Media

Processing technology, laser, optical and thermal properties of ceramic laser gain materials

2005 ◽  
Author(s):  
Mark Dubinskii ◽  
Larry D. Merkle ◽  
John R. Goff ◽  
Gregory J. Quarles ◽  
Vida K. Castillo ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Processing Technology ◽  
Laser Gain ◽  
Ceramic Laser

Recent Advances in High Dispersion Spectroscopy of Globular Cluster Stars

1988 ◽  
Vol 132 ◽  
pp. 525-530
Author(s):  
Raffaele G. Gratton
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
High Dispersion ◽  
Photographic Material ◽  
Recent Advances ◽  
Metal Abundances ◽  
Ccd Detectors ◽  
Major Progress

The use CCD detectors has allowed a major progress in abundance derivations for globular cluster stars in the last years. Abundances deduced from high dispersion spectra now correlates well with other abundance indicators. I discuss some problems concerning the derivation of accurate metal abundances for globular clusters using high dispersion spectra from both the old photographic and the most recent CCD data. The discrepant low abundances found by Cohen (1980), from photographic material for M71 giants, are found to be due to the use of too high microturbulences.

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