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

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

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

Digital differential hysteresis iimage processing displays what the microscope acquires but the eye can't see

1995 ◽  
Vol 53 ◽  
pp. 642-643
Author(s):  
Klaus-Ruediger Peters
Keyword(s):  
Image Processing ◽  
Visual System ◽  
High Precision ◽  
Image Data ◽  
Processing Technology ◽  
Output Data ◽  
Contrast Resolution ◽  
Pixel Intensity ◽  
Data Reading ◽  
Hysteresis Properties

Differential hysteresis processing is a new image processing technology that provides a tool for the display of image data information at any level of differential contrast resolution. This includes the maximum contrast resolution of the acquisition system which may be 1,000-times higher than that of the visual system (16 bit versus 6 bit). All microscopes acquire high precision contrasts at a level of <0.01-25% of the acquisition range in 16-bit - 8-bit data, but these contrasts are mostly invisible or only partially visible even in conventionally enhanced images. The processing principle of the differential hysteresis tool is based on hysteresis properties of intensity variations within an image.Differential hysteresis image processing moves a cursor of selected intensity range (hysteresis range) along lines through the image data reading each successive pixel intensity. The midpoint of the cursor provides the output data. If the intensity value of the following pixel falls outside of the actual cursor endpoint values, then the cursor follows the data either with its top or with its bottom, but if the pixels' intensity value falls within the cursor range, then the cursor maintains its intensity value.

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