Wavelength locking semiconductor laser system

Abstract

A wavelength locking semiconductor laser system comprises: a first optical fiber coupling module to an Nth optical fiber coupling module, wherein the kth optical fiber coupling module comprises a kth energy transmission optical fiber and a plurality of kth semiconductor laser light-emitting tubes; a volume grating locking module comprising a plurality of (N+1)th semiconductor laser light-emitting tubes, a volume grating and an (N+1)th energy transmission optical fiber; an optical fiber combiner comprising a first input optical fiber to an (N + 1) th input optical fiber and an output optical fiber, wherein the kth energy transmission optical fiber is connected with the kth input optical fiber, and the (N+1) th energy transmission optical fiber is connected with the (N+1)th input optical fiber; and an partial reflection structure arranged on one side of the output end face of the output optical fiber, wherein the partial reflection structure is used as a resonance feedback structure of the plurality of semiconductor laser light-emitting tubes from the first semiconductor laser light-emitting tubes to the Nth semiconductor laser light-emitting tubes. The spectrum of the output light beam of the wavelength locking semiconductor laser system is narrowed.

Description

technical field

[0001] The invention relates to the field of semiconductors, in particular to a wavelength-locked semiconductor laser system. Background technique

[0002] Semiconductor lasers have excellent characteristics such as high efficiency, compact structure, wide wavelength range, low cost, and high reliability. However, traditional semiconductor lasers have poor spectral characteristics, poor beam quality, and low direct output power and brightness. However, some solid-state lasers and fiber lasers require the output beam of the semiconductor laser to have a narrow linewidth. In order to narrow the spectrum of a semiconductor laser, a volume Bragg grating (VBG) is often used as a reflective cavity mirror and a high-power semiconductor laser to form an external cavity semiconductor laser.

[0003] Commonly used semiconductor laser pump sources include single-tube beam combining modules and arrays, which are fiber-coupled after beam shaping to become pigtail output...

Examples

Embodiment Construction

[0023] An embodiment of the present invention provides a wavelength-locked semiconductor laser system, combined with reference figure 1 , figure 2 and image 3 ,include:

[0024] The first fiber coupling module G1 to the Nth fiber coupling module Gn, the kth fiber coupling module includes the kth energy transmission fiber and a number of kth semiconductor laser light-emitting tubes; N is an integer greater than or equal to 2, k is greater than or equal to 1 and less than or an integer equal to N;

[0025] A volume grating locking module S, the volume grating locking module S includes a number of N+1th semiconductor laser light emitting tubes, a volume grating 22 and an N+1th energy transmission fiber C N+1 ;

[0026] An optical fiber combiner 10, the optical fiber combiner 10 includes a first input optical fiber to an N+1 input optical fiber, and an output optical fiber 101; the kth energy transmission fiber is connected to the kth input fiber, and the N+1th energy transm...

technical field

[0001] The invention relates to the field of semiconductors, in particular to a wavelength-locked semiconductor laser system. Background technique

[0002] Semiconductor lasers have excellent characteristics such as high efficiency, compact structure, wide wavelength range, low cost, and high reliability. However, traditional semiconductor lasers have poor spectral characteristics, poor beam quality, and low direct output power and brightness. However, some solid-state lasers and fiber lasers require the output beam of the semiconductor laser to have a narrow linewidth. In order to narrow the spectrum of a semiconductor laser, a volume Bragg grating (VBG) is often used as a reflective cavity mirror and a high-power semiconductor laser to form an external cavity semiconductor laser.

[0003] Commonly used semiconductor laser pump sources include single-tube beam combining modules and arrays, which are fiber-coupled after beam shaping to become pigtail output...

Examples

Embodiment Construction

[0023] An embodiment of the present invention provides a wavelength-locked semiconductor laser system, combined with reference figure 1 , figure 2 and image 3 ,include:

[0024] The first fiber coupling module G1 to the Nth fiber coupling module Gn, the kth fiber coupling module includes the kth energy transmission fiber and a number of kth semiconductor laser light-emitting tubes; N is an integer greater than or equal to 2, k is greater than or equal to 1 and less than or an integer equal to N;

[0025] A volume grating locking module S, the volume grating locking module S includes a number of N+1th semiconductor laser light emitting tubes, a volume grating 22 and an N+1th energy transmission fiber C N+1 ;

[0026] An optical fiber combiner 10, the optical fiber combiner 10 includes a first input optical fiber to an N+1 input optical fiber, and an output optical fiber 101; the kth energy transmission fiber is connected to the kth input fiber, and the N+1th energy transm...

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