CN219304164U - Semiconductor laser - Google Patents

Abstract

The application discloses a semiconductor laser, which belongs to the technical field of laser and comprises a first pumping source, wherein the first pumping source comprises a first output end, and the first pumping source outputs pumping light through the first output end; the second pump source comprises a second output end, and the second pump source outputs pump light through the second output end; the indicating optical chip is arranged in the second pumping source and outputs indicating light through the second output end; and the beam combiner is connected with the first output end and the second output end. The beam combiner of the semiconductor laser does not need to provide a special input pin for the indicating optical chip, and all the input pins can be connected with the pumping sources, so that the N multiplied by 1 beam combiner can be connected with N multiplied by 1 pumping sources, the laser output power of 1/N is improved, and the redundancy of the laser is increased. By integrating the indicating light chip with the pumping source, part of structural members are removed, the optical material cost is reduced, and the integrated control of laser and indicating light can be realized.

Description

Semiconductor laser

Technical Field

The application belongs to the technical field of lasers, and particularly relates to a semiconductor laser.

Background

The optical fiber output semiconductor laser is generally formed by welding N-1 pump sources with an input optical fiber of an N x 1 beam combiner, the N x 1 beam combiner is also required to be divided into an input optical fiber pin for connecting a red light semiconductor laser, the red light semiconductor laser can output indicating light, the red light semiconductor laser can be used for identifying the position of the laser output laser by human eyes, the output power is generally smaller than 1mW, and the laser output semiconductor laser has no effect on welding of the laser. Therefore, the output power of the optical fiber output semiconductor laser is N-1 times of the single pump source power, and the output power of the laser is limited because the red light occupies 1 input pin of the beam combiner.

Disclosure of Invention

The utility model aims to: the embodiment of the application provides a semiconductor laser, which aims to overcome the technical defect that the output power of the laser is limited because the indicating light occupies an input pin of a beam combiner in the prior art.

The technical scheme is as follows: the embodiment of the application provides a semiconductor laser, which comprises:

the first pump source comprises a first output end, and the first pump source outputs pump light through the first output end;

the second pump source comprises a second output end, and the second pump source outputs pump light through the second output end;

the indicating light chip is arranged inside the second pumping source and outputs indicating light through the second output end;

and the beam combiner is connected with the first output end and the second output end.

In some embodiments, the beam combiner comprises:

and a plurality of input pins, wherein part of the input pins are connected with the first output ends in a one-to-one correspondence manner, and the rest of the input pins are connected with the second output ends in a one-to-one correspondence manner.

In some embodiments, the combiner includes N of the input pins;

the semiconductor laser comprises one second pump source and N-1 first pump sources.

In some embodiments, the second pump source further comprises:

the second power supply line is connected with a second pump light chip of the second pump source;

and the third power supply line is connected with the indicating light chip.

In some embodiments, the pump module further comprises:

the second pump light chip and the indication light chip are accommodated in the second shell, and the second power supply circuit and the third power supply circuit penetrate through the second shell.

In some embodiments, the semiconductor laser further comprises:

and the power supply module is connected with the second power supply line and the third power supply line.

In some embodiments, the first pump source includes a first pump light chip and a first power supply line connecting the first pump light chip and the power supply module.

In some embodiments, the power supply module includes a power supply switching module configured to:

disconnecting the first power supply line and the second power supply line when the third power supply line is on; and when the third power supply line is disconnected, the first power supply line and the second power supply line are connected.

In some embodiments, the pump light output power of the first pump source is consistent with the pump light output power of the second pump source.

In some embodiments, the indicator light chip outputs red indicator light, and the output power of the indicator light chip is less than 1mW.

The beneficial effects are that: compared with the prior art, the semiconductor laser of the embodiment of the application comprises: the first pump source comprises a first output end, and the first pump source outputs pump light through the first output end; the second pump source comprises a second output end, and the second pump source outputs pump light through the second output end; the indicating optical chip is arranged in the second pumping source and outputs indicating light through the second output end; and the beam combiner is connected with the first output end and the second output end. It can be understood that the semiconductor laser integrates the indication optical chip inside the second pump source, and the light generated by the indication optical chip are output through the second output end, the beam combiner does not need to provide an input pin specially for the indication optical chip, and all the input pins of the beam combiner can be connected with the pump sources, so that for the Nx1 beam combiner, the Nx1 pump sources can be connected, the laser output power of 1/N is improved, and the redundancy of the laser is increased. And the indicating light chip and the second pumping source are integrated into a whole, so that most structural parts originally required by the indicating light are removed, the optical material cost is reduced, and the integrated control of the laser and the indicating light can be realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a semiconductor laser provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of the structure of a first pump source of the semiconductor laser of FIG. 1;

FIG. 3 is a schematic diagram of a second pump source of the semiconductor laser of FIG. 1;

fig. 4 is a power block diagram of a semiconductor laser provided in an embodiment of the present application;

reference numerals: 100-a first pump source; 101-a first pump light chip; 102-a first output; 103-a first power supply line; 104-a first housing; 200-a second pump source; 201-a second pump light chip; 202-a second output; 203-a second power supply line; 204-a second housing; 300-indicating a light chip; 301-a third power supply line; 400-beam combiner; 401-input pins; 500-output optical fiber.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be understood that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may include one or more features, either explicitly or implicitly. Furthermore, in the description of the present application, unless specifically limited otherwise, the meaning of "plurality" means two or more, "inner" and "outer" are with respect to the outline of the device.

In order to solve the technical problem that the output power of pumping light is limited due to the fact that the input pin of the beam combiner is occupied by the indicating light in the conventional optical fiber output semiconductor laser, the embodiment of the application provides a semiconductor laser, and particularly the semiconductor laser is an optical fiber output semiconductor laser.

Referring to fig. 1, fig. 1 shows a structure of a semiconductor laser provided in an embodiment of the present application, where a minimum output laser unit of the semiconductor laser is a pump source, the semiconductor laser has multiple pump sources, and the pump sources output pump light with the same wavelength, and the pump light is transmitted to a beam combiner 400 for combining.

Specifically, the pump sources of the semiconductor laser may be divided into a first pump source 100 and a second pump source 200, wherein the first pump source 100 includes a first output end 102, and the first pump source 100 outputs pump light through the first output end 102; the second pump source 200 includes a second output 202, and the second pump source 200 outputs pump light through the second output 202.

In particular, the indication light chip 300 of the semiconductor laser is disposed inside the second pump source 200, and the indication light generated by the indication light chip 300 is also output through the second output terminal 202. That is, in the second pump source 200, the indication light and the pump light are coaxially output.

In addition, the semiconductor laser further includes a combiner 400, and the combiner 400 is an optical fiber connection device that couples the optical energy output from the transmitting optical fiber into the receiving optical fiber to the maximum extent by the optical fiber precision fusion technique and minimizes the influence on the system due to its intervening optical path. In the embodiment of the present application, the first output 102 of the first pump source 100 and the second output 202 of the second pump source 200 are connected to the beam combiner 400 through the output optical fiber 500 for beam combining.

It can be understood that the indication light chip 300 of the semiconductor laser is disposed inside the second pump source 200, and the indication light generated by the indication light chip and the pump light generated by the second pump source 200 are emitted through the second output end 202, so that the indication light semiconductor laser which is independently emitted for the indication light is not required to be additionally disposed, the indication light does not occupy the input pins 401 of the beam combiner 400, and therefore all the input pins 401 of the beam combiner 400 can be connected with the pump source, and one pump source can be connected, thereby improving the output power of the pump light of the laser.

Referring to fig. 1 again, the combiner 400 includes a plurality of input pins 401, among the plurality of input pins 401 of the combiner 400, some of the input pins 401 are connected to the first output terminal 102 in a one-to-one correspondence through the output optical fibers 500, and the rest of the input pins 401 are connected to the second output terminal 202 in a one-to-one correspondence through the output optical fibers 500. Thus, when the laser outputs pump laser light, all the input pins 401 of the beam combiner 400 have pump light input, so that the pump light output power is improved to the maximum extent.

In some embodiments, taking the n×1 combiner 400 as an example, it includes N input pins 401, where N-1 input pins 401 are connected to the first output 102 of the first pump source 100, and 1 input pin 401 is connected to the second output 202 of the second pump source 200, that is, the semiconductor laser includes 1 second pump source 200 and N-1 first pump sources 100, so that only one indication light chip 300 is provided for generating indication light, avoiding redundancy of the indication light. The semiconductor laser can boost the pump light output power by 1/N compared with the case that one input pin 401 of the beam combiner 400 is occupied in the prior art.

Referring to fig. 2, fig. 2 shows a structure of a first pump source 100 according to an embodiment of the present application, where the first pump source 100 includes a first pump light chip 101, a first output end 102, a first power supply line 103, and a first housing 104. The first pump light chip 101 is disposed inside the first housing 104, and the first power supply line 103 penetrates from the outside of the first housing 104 to the inside of the first housing 104 and is connected to the first pump light chip 101, so that power can be supplied through the first power supply line 103 to excite the first pump light chip 101 to generate pump light. The first power supply line 103 may be labeled with a positive electrode and a negative electrode at corresponding positions of the first housing 104 to facilitate wiring. The first output terminal 102 penetrates from the inside to the outside of the first housing 104, and pump light generated by the first pump light chip 101 is output through the first output terminal 102.

In some embodiments, the first pump source 100 includes a plurality of first pump light chips 101, the first pump light chips 101 are synchronously powered by the first power supply line 103, and pump light generated by each first pump light chip 101 is coaxially emitted in the same path.

Referring to fig. 3, fig. 3 shows a structure of a second pump source 200 according to an embodiment of the present application, where the second pump source 200 includes a second pump light chip 201, a second output end 202, a second power supply line 203, and a second housing 204. The second pump light chip 201 is disposed inside the second housing 204, and the second power supply line 203 penetrates from the outside of the second housing 204 to the inside of the second housing 204 and is connected to the second pump light chip 201, so that power can be supplied through the second power supply line 203 to excite the second pump light chip 201 to generate pump light. Likewise, the second power supply line 203 may be labeled with a positive electrode and a negative electrode at the corresponding positions of the second housing 204, so as to facilitate wiring. The second output terminal 202 penetrates from the inside to the outside of the second case 204, and pump light generated by the second pump light chip 201 is output through the second output terminal 202.

In some embodiments, the second pump source 200 includes a plurality of second pump light chips 201, and the second pump light chips 201 are synchronously powered by the second power supply line 203, and pump light generated by each second pump light chip 201 is coaxially emitted in the same path.

The second pump source 200 is different from the first pump source 100 in that the indication light chip 300 of the embodiment of the present application is also disposed inside the second housing 204 of the second pump source 200, so that the indication light chip 300 is integrated with the second pump source 200, the second pump source 200 is further correspondingly provided with a third power supply line 301, and the third power supply line 301 penetrates from the outside of the second housing 204 to the inside of the second housing 204 and is connected with the indication light chip 300, so that the indication light chip 300 can generate indication light, and in the second pump source 200, the indication light is the same as part of the transmission path of the pump light, and the indication light is also output through the second output end 202. Likewise, the third power supply line 301 may be labeled with a positive electrode and a negative electrode at corresponding positions of the second housing 204 to facilitate wiring.

In some embodiments, one of the plurality of second pump light chips 201 of the second pump source 200 may be replaced with the indicating light chip 300, and the indicating light may be coupled to the same path of the pump light, so that the indicating light may be used to indicate where the laser outputs the pump light when the indicating light is outputted.

In some embodiments, the indication light chip 300 may be further disposed in the internal space of the second pump source 200, and the indication light generated by the indication light chip 300 may be coupled to the same path of the pump light by matching with an optical device such as a lens or a prism.

Referring to fig. 4, fig. 4 shows a power supply block diagram of a semiconductor laser provided in an embodiment of the present application, and in some embodiments, the semiconductor laser further includes a power supply module, where the power supply module is connected to the first power supply line 103, the second power supply line 203, and the third power supply line 301, so that the first pump light chip 101 of the first pump source 100, the second pump light chip 201 of the second pump source 200, and the indication light chip 300 can be powered by the power supply module. It will be appreciated that the power supply module may be implemented by a power supply, a circuit board, etc. as known in the art, and is not limited in detail herein.

In some embodiments, the power supply module of the semiconductor laser includes a power supply switching module configured to: when the third power supply line 301 is turned on, the first power supply line 103 and the second power supply line 203 are disconnected; when the third power supply line 301 is turned off, the first power supply line 103 and the second power supply line 203 are turned on. The semiconductor laser can turn off the indication light when the pump light (laser light) is output and turn on the indication light when the laser light is turned off.

In some embodiments, the pump sources with different power outputs, the core diameter of the output optical fiber 500 is different, the higher the output power, the larger the core diameter of the output optical fiber 500, and the first pump source 100 and the second pump source 200 of the semiconductor laser can output pump light with different output powers. Preferably, the pump light output power of the first pump source 100 is identical to that of the second pump source 200, so that the core diameter of the output optical fiber 500 is identical to that of the combiner 400.

In some embodiments, the indication light chip 300 outputs red indication light, which can be implemented by assembling a red light semiconductor chip in the second pump source 200, where the red indication light is used for identification, and of course, the indication light can also be selected from other colors according to the needs, and only a semiconductor chip capable of generating light of a corresponding color needs to be provided.

In some embodiments, the output power of the indication light chip 300 is less than 1mW, and the power supply pin of the indication light chip 300 is led out from the side wall of the second housing 204 as the third power supply line 301.

It can be understood that, by integrating the indication optical chip 300 inside the second pump source 200 and outputting the light generated by the indication optical chip 300 through the second output end 202, the beam combiner 400 does not need to provide one input pin 401 for the indication optical chip 300, and all the input pins 401 of the beam combiner 400 can be connected with the pump sources, so that for the n×1 beam combiner 400, n×1 pump sources can be connected, so as to improve the laser output power of 1/N and increase the redundancy of the laser. And, through integrating the indication light chip 300 and the second pumping source 200, most structural members originally required by the indication light are removed, the optical material cost is reduced, and the integrated control of laser and the indication light can be realized.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above describes the semiconductor laser provided in the embodiments of the present application in detail, and specific examples are applied to illustrate the principles and embodiments of the present application, where the above description of the embodiments is only for helping to understand the technical solution and core ideas of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A semiconductor laser, comprising:

-a first pump source (100), the first pump source (100) comprising a first output (102), the first pump source (100) outputting pump light through the first output (102);

-a second pump source (200), the second pump source (200) comprising a second output (202), the second pump source (200) outputting pump light through the second output (202);

an indication light chip (300), wherein the indication light chip (300) is arranged inside the second pumping source (200), and the indication light chip (300) outputs indication light through the second output end (202);

-a combiner (400), said combiner (400) connecting said first output (102) and said second output (202).

2. The semiconductor laser according to claim 1, characterized in that the beam combiner (400) comprises:

-a plurality of input pins (401), some of said input pins (401) being connected in a one-to-one correspondence with said first output (102), the remaining input pins (401) being connected in a one-to-one correspondence with said second output (202).

3. The semiconductor laser according to claim 2, characterized in that the beam combiner (400) comprises N of the input pins (401);

the semiconductor laser comprises one of the second pump sources (200) and N-1 of the first pump sources (100).

4. The semiconductor laser according to claim 1, wherein the second pump source (200) further comprises:

a second power supply line (203), the second power supply line (203) being connected to a second pump light chip (201) of the second pump source (200);

and a third power supply line (301), wherein the third power supply line (301) is connected with the indicating light chip (300).

5. The semiconductor laser according to claim 4, wherein the second pump source (200) further comprises:

the second pump light chip (201) and the indication light chip (300) are contained in the second casing (204), and the second power supply circuit (203) and the third power supply circuit (301) penetrate through the second casing (204).

6. The semiconductor laser of claim 4, further comprising:

and a power supply module that connects the second power supply line (203) and the third power supply line (301).

7. The semiconductor laser according to claim 6, characterized in that the first pump source (100) comprises a first pump light chip (101) and a first supply line (103), the first supply line (103) connecting the first pump light chip (101) and the supply module.

8. The semiconductor laser of claim 7, wherein the power supply module comprises a power supply switching module configured to:

disconnecting the first power supply line (103) and the second power supply line (203) when the third power supply line (301) is on; when the third power supply line (301) is disconnected, the first power supply line (103) and the second power supply line (203) are connected.

9. The semiconductor laser according to claim 1, characterized in that the pump light output power of the first pump source (100) coincides with the pump light output power of the second pump source (200).

10. The semiconductor laser according to claim 1, wherein the indication light chip (300) outputs red indication light, and wherein the output power of the indication light chip (300) is less than 1mW.

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