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Optical apparatus comprising a pump-light-guiding fiber

An optical device and optical fiber technology, applied in the field of side pumping, can solve the problems of optical adhesive damage, affecting pump coupling efficiency, etc., and achieve the effect of reducing the damage threshold and increasing the mechanical strength

Inactive Publication Date: 2009-07-15
STATE OF ISRAEL - SOREQ NUCLEAR RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Above this value, the optical adhesive is damaged and the coupling efficiency between the pump guide fiber and the inner cladding of the double-clad fiber is compromised

Method used

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  • Optical apparatus comprising a pump-light-guiding fiber
  • Optical apparatus comprising a pump-light-guiding fiber
  • Optical apparatus comprising a pump-light-guiding fiber

Examples

Experimental program
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Embodiment Construction

[0026] now refer to figure 2 , which shows the side coupling of a fiber laser or optical amplifier, such as a high power double cladding laser or amplifier, constructed and implemented according to an embodiment of the prior art invention (Sintov, PCT / IL2004 / 000512). The contents of all patents and literature mentioned herein are incorporated herein by reference.

[0027] The pump guiding fiber 30 may include a fiber cladding 31 , a fiber core 32 and an attachment section 33 . as image 3As shown, the core 32 is exposed by stripping away the fiber cladding 31 along the desired attachment portion 33 . The attachment portion 33 may include a straight core portion 34 and a tapered core portion 35 . The pump guide fiber 30 may be optically connected at one end to a pump source 29, such as, but not limited to, a semiconductor diode laser. The pump guide fiber 30 is attached at its other end to the inner cladding 42 of a receiving (also referred to as active or amplifying) fibe...

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PUM

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Abstract

Optical apparatus including a pump-guiding fiber (30) including a fiber cladding (31), a fiber core (32) and an attachment section (33), the attachment section (33) including a straight core section (34) and a tapered core section (35), the pump-guiding fiber (30) being optically attached at one end thereof to a pump source (29) and an opposite end of the pump-guiding fiber (30) being attached to an inner clad (42) of a receiving fiber (40) through an attachment section (50), the attachment section (50) including both the straight core section (34) and the tapered core section (35) of the pump-guiding fiber (30), characterized in that both the straight core section (34) and the tapered core section (35) of the pump-guiding fiber (30) are attached to the receiving fiber (40) with an intermediate sol-gel material (51).

Description

technical field [0001] The present invention relates to methods and materials for enabling side pumping of fiber lasers and amplifiers, such as high power fiber lasers and amplifiers. Background technique [0002] High power fiber lasers have become increasingly popular due to their efficiency, simplicity and reliability. In addition, it is very easy and durable in view of its simple arrangement structure. [0003] High power applications typically use double clad fiber. This fiber consists of: a core usually doped with a lasing material such as rare earth ions or other ions; an inner cladding surrounding the doped core through which the pump power is delivered and gradually absorbed in the core; the outer cladding wraps around the inner cladding and forms a dielectric waveguide for the pump signal. The optical properties of the inner cladding are well matched to high-power diode lasers typically used for solid-state laser pumping. Therefore, efficient pumping can be ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067G02B6/38H01S3/094
CPCG02B6/2821H01S3/094003H01S3/06729
Inventor 约阿夫·钦托夫雷兹·格维什雅各布·格利克奥里·卡茨格利特·斯特鲁姆亚伯拉罕·恩格兰德
Owner STATE OF ISRAEL - SOREQ NUCLEAR RES CENT
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