Cladding material for laser amplifier transverse oscillation suppression

Patent metadata

Field	Value
Publication number	US-10686289-B2
Application number	US-201816131825-A
Country	US
Kind code	B2
Filing date	Sep 14, 2018
Priority date	Mar 14, 2016
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

A solid-state laser amplifier includes a core material providing an active gain medium. A cladding material is on the core material that is the same material as the core material that further comprises a broadband absorber material. The cladding material suppresses transverse oscillations in solid-state, single-crystal or ceramic laser amplifiers by employing a native-material, solid-state, index-matched cladding containing an appropriate broadband absorber.

First claim

What is claimed is:

1. A method for suppressing transverse oscillations in a solid-state, single-crystal, or ceramic laser amplifier, comprising:
applying a cladding material to an outer perimeter region of a core of the solid-state, single-crystal, or ceramic laser amplifier,

wherein the cladding material is a same material as that of the core and includes a broadband absorber material, further comprising in-diffusing the broadband absorber material at the outer periphery of the core through a controlled electrochemical process.

2. The method of claim 1 , comprising in-diffusing the broadband absorber material at a periphery of the core through controlled thermal annealing in a reducing or an oxidizing atmosphere.

3. The method of claim 2 , further comprising first coating the periphery of the core with a pigment and then heat-treating to promote diffusion of the pigment through an outer layer of a core material.

4. The method of claim 1 , further comprising depositing pairs of ion-blocking/electron-blocking electrodes and controlled potentiostatic electro-reduction or electro-oxidation of the periphery of the core material under a controlled atmosphere.

5. The method of claim 1 , wherein the broadband absorber material is equal to or less than 50 atomic layers of graphene.

6. The method of claim 1 , further comprising heat treating the gain medium in a reducing or oxidizing environment of the wide absorption bandwidth of color centers created by in-diffusing dopants or point-defects having appropriate absorption bands.

Assignees

• Univ Central Florida Res Found Inc
• Univ Of Central Florida Research Foundation

Inventors

• Gaume Romain
• Cunningham Eric
• Chen Shi

Classifications

• H01S3/2308 Primary

  Amplifier arrangements, e.g. MOPA · CPC title

• H01S3/061

  with elliptical or circular cross-section and elongated shape, e.g. rod · CPC title

• H01S2301/02

  ASE (amplified spontaneous emission), noise; Reduction thereof · CPC title

• H01S3/1623

  chromium, e.g. Alexandrite · CPC title

• H01S3/1615

  samarium · CPC title