Tuning rare earth ion emission wavelength in phosphate based glasses using cerium oxide

A phosphate glass, glass technology, used in phonon exciters, active media materials, lasers, etc., can solve the problems of difficult to obtain high optical quality and manufacture large apertures

Active Publication Date: 2014-06-11

SCHOTT AG

8 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Most of these glasses have proven difficult to obtain...

Method used

[0069] All glasses were manufactured using laser grade components and melted under agitation using a platinum stirrer in a dry oxygen atmosphere to achieve good homogeneity. All glasses were cast into molds and properly annealed to remove stress as the liquid cooled to the amorphous state. The resulting glass sheet is shaped into the form desired for use in tools that provide various glass properties.

[0076] As can be seen from the data in the table, the replacement of La2O3 in Example A...

Abstract

The invention relates to tuning rare earth ion emission wavelength in phosphate based glasses using cerium oxide, and specifically relates to a Nd-doped (and/or Yb-doped and/or Er-doped) phosphate laser glass having a peak emission wavelength that is shorter than 1054 nm. Cerium oxide (CeO2 ) is incorporated into a phosphate glass host system, preferably in replacement of lanthanum oxide, to shift the peak emission wavelength to a wavelength shorter than 1054nm. The invention further relates to a laser system using mixed-glass arrangement and phase compensation, wherein one of the glasses of the mixed glass system is an Nd-doped (and/or Yb-doped and/or Er-doped) phosphate laser glass having a peak emission wavelength that is shorter than 1054 nm, and a method of generating a laser beam pulse using such a laser system.

Application Domain

Active medium material

Technology Topic

Phase compensationCerium oxide +5

Image

Examples

Experimental program(1)

Example Embodiment

[0067] Example

[0068] Table 1 lists the La 2 O 3 Nd-doped phosphate-based glasses (LaNd) and containing CeO 2 of Nd-doped phosphate glasses according to the present invention. Table 2 lists the laser properties of the two compositions.

[0069] All glasses are manufactured using laser grade compositions and are melted under agitation using a platinum stirrer in a dry oxygen environment for better homogeneity. All glass was cast into molds and annealed appropriately to remove the stress as the liquid cooled to an amorphous state. The resulting glass slab is shaped into the form required for use in tools that provide various glass properties.

[0070] Table 1. Examples

[0071]

[0072] Table 2. Laser Properties of Example Compositions

[0073]

[0074] Table 3. Mechanical properties of example compositions

[0075]

[0076] As can be seen from the data in the table, with the CeO in Example 1 2 Replace La in Example A 2 O 3 This results in a shortening of the peak emission wavelength in phosphate glasses by more than 2 nm. Comparing Example B with Examples 2 and 3, using CeO 2 replace La 2 O 3 This results in a shortening of the peak emission wavelength in phosphate glasses by more than 1.5 nm. In addition, comparing Example A with Example 1, adding CeO 2 Increases the peak emission cross section. In Examples 2 and 3, CeO was added 2 prolong the fluorescence lifetime.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.