A detachable sealed laser polarization maintaining transmission device

Abstract

The invention relates to a detachable sealed laser polarization-maintaining transmission device, comprising: an incident light connection assembly fixed and sealed with the incident optical fiber; an outgoing light connection assembly fixed and sealed with the outgoing optical fiber; the incident light connection assembly is connected with the incident light The outgoing light connection assembly is aligned and detachably connected, and a sealing rubber ring is provided between the incident light connection assembly and the outgoing light connection assembly. By aligning and detachably connecting the incident light connecting component and the outgoing light connecting component, the problem that the existing laser transmission method cannot be disassembled, or cannot be installed quickly after disassembly and ensure the polarization stability of the transmitted laser is solved.

Description

technical field

[0001] The invention relates to the field of laser technology, in particular to a detachable and sealed laser polarization-maintaining transmission device. Background technique

[0002] Single-wavelength narrow-linewidth frequency-stabilized laser light source is the core device of precision measuring instruments. By measuring laser flight time, laser interference phase or laser light intensity, high-precision distance measurement, speed measurement, object surface structure, material absorption spectrum, quantum state measurement, etc. are realized. This measurement method is widely used in many fields such as surveying and mapping, communications, atomic clocks, atomic gravity meters, and quantum computing.

[0003] In the field of precise measurement of a single-wavelength narrow-linewidth frequency-stabilized laser, it is required that the laser be transmitted stably from the light source to the measuring instrument. However, the use of spatial optical ...

Examples

Embodiment 1

[0042] Such as Figure 1-6 As shown, the detachable sealed laser polarization-maintaining transmission device in this embodiment consists of input optical fiber 1, input collimator mirror 2, input flange structure 3, input optical window 4, alignment device A5, sealing rubber ring 6, The alignment device B7 consists of an output optical window 8 , an output flange structure 9 , an output collimator 10 , and an output optical fiber 11 .

[0043] In this embodiment, the input optical fiber 1 is a 780nm single-mode polarization-maintaining optical fiber with a core diameter of about 4.2 μm. One end of the input fiber 1 is connected to a narrow linewidth fiber laser. Using a 1560nm single-frequency laser with an output linewidth ≤ 20kHz and an output power of about 30mW, the output power is amplified by an erbium-doped fiber amplifier to 5W, and injected into a periodically poled lithium niobate crystal. Through precise temperature control, the injection laser meets the temperat...

Embodiment 2

[0045] In this embodiment, the input optical window 4 and the output optical window 8 use polarizers with a transmittance of 80% and a polarization extinction ratio of 100000:1. Other parts and parts connection are the same as in Embodiment 1. The laser transmission effect with better polarization maintaining performance can be obtained.

Embodiment 3

[0047] In this embodiment, the number of input optical fiber 1 and output optical fiber 11 is more than one, the number of output collimating mirrors 2 and input collimating mirrors 10 match, and the number of output flange structural parts 3 and input flange structural parts 9 is the same. The collimating lens mounting hole and assembled. Other parts and parts connection are the same as in Embodiment 1.

technical field

[0001] The invention relates to the field of laser technology, in particular to a detachable and sealed laser polarization-maintaining transmission device. Background technique

[0002] Single-wavelength narrow-linewidth frequency-stabilized laser light source is the core device of precision measuring instruments. By measuring laser flight time, laser interference phase or laser light intensity, high-precision distance measurement, speed measurement, object surface structure, material absorption spectrum, quantum state measurement, etc. are realized. This measurement method is widely used in many fields such as surveying and mapping, communications, atomic clocks, atomic gravity meters, and quantum computing.

[0003] In the field of precise measurement of a single-wavelength narrow-linewidth frequency-stabilized laser, it is required that the laser be transmitted stably from the light source to the measuring instrument. However, the use of spatial optical ...

Examples

Embodiment 1

[0042] Such as Figure 1-6 As shown, the detachable sealed laser polarization-maintaining transmission device in this embodiment consists of input optical fiber 1, input collimator mirror 2, input flange structure 3, input optical window 4, alignment device A5, sealing rubber ring 6, The alignment device B7 consists of an output optical window 8 , an output flange structure 9 , an output collimator 10 , and an output optical fiber 11 .

[0043] In this embodiment, the input optical fiber 1 is a 780nm single-mode polarization-maintaining optical fiber with a core diameter of about 4.2 μm. One end of the input fiber 1 is connected to a narrow linewidth fiber laser. Using a 1560nm single-frequency laser with an output linewidth ≤ 20kHz and an output power of about 30mW, the output power is amplified by an erbium-doped fiber amplifier to 5W, and injected into a periodically poled lithium niobate crystal. Through precise temperature control, the injection laser meets the temperat...

Embodiment 2

[0045] In this embodiment, the input optical window 4 and the output optical window 8 use polarizers with a transmittance of 80% and a polarization extinction ratio of 100000:1. Other parts and parts connection are the same as in Embodiment 1. The laser transmission effect with better polarization maintaining performance can be obtained.

Embodiment 3

[0047] In this embodiment, the number of input optical fiber 1 and output optical fiber 11 is more than one, the number of output collimating mirrors 2 and input collimating mirrors 10 match, and the number of output flange structural parts 3 and input flange structural parts 9 is the same. The collimating lens mounting hole and assembled. Other parts and parts connection are the same as in Embodiment 1.

Images