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Optical system and method for producing an optical system

An optical system and optical cavity technology, applied in the field of optoelectronics, can solve the problem of not allowing simultaneous acquisition

Pending Publication Date: 2022-07-15
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] On the other hand, for LiDAR (Laser Detection and Ranging) type applications or 400G Ethernet type mid-range data transmission applications, this type of solution does not allow sufficient power (typically greater than 100mW) and single-mode laser bundle

Method used

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  • Optical system and method for producing an optical system
  • Optical system and method for producing an optical system
  • Optical system and method for producing an optical system

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Embodiment Construction

[0069] Before beginning a detailed review of embodiments of the present invention, it is recalled that the first Bragg mirror includes, inter alia, the following optional features that may be used in combination or alternatively:

[0070] According to one example, the undulations are spaced apart from each other such that a separation layer is exposed between the undulations.

[0071] According to one example, the undulations are encapsulated in an encapsulation layer based on the second material.

[0072] According to one example, the height h3 of the undulations is greater than or equal to 5 nm, and / or the height h3 of the undulations is less than or equal to 30 nm.

[0073] According to one example, the thickness e2 of the spacer layer is greater than or equal to 10 nm, and / or the thickness e2 of the spacer layer is less than or equal to 50 nm.

[0074] According to one example, the undulations have a thermal insulation pattern projected in a main extension plane xy formed...

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Abstract

The invention relates to an optical system comprising a Bragg mirror comprising a portion (110) of a ribbon (100) having a refractive index n1, an undulation (112) having a refractive index n3, and a spacer layer (111) separating the ribbon (100) from the undulation (112) and having a refractive index n2, such that n2 < n3 and n2 < n1. The invention also relates to a method for producing such a mirror and to a laser comprising such a mirror as an output mirror.

Description

technical field [0001] The present invention relates to the field of optoelectronics. The present invention has found that the production of semiconductor laser sources is particularly advantageous, for example for LiDAR (acronym for "laser detection and ranging") remote sensing lasers or for mid-range data communication lasers of the 400G Ethernet type application. Background technique [0002] A Bragg mirror allows reflection of optical radiation normally incident to the mirror while limiting optical losses. Thus, for a given wavelength λ of optical radiation, it may have a reflectivity R greater than 99%. [0003] Bragg mirrors are therefore particularly advantageous for the fabrication of optical cavities for laser applications, and especially for semiconductor laser sources. [0004] Known semiconductor laser source architectures are as Figure 1A , Figure 1B shown. Such an architecture typically comprises: a ribbon guide 100 extending longitudinally between two t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122H01S5/125
CPCG02B6/122H01S5/125G02B5/1861H01S5/021H01S5/141H01S5/1032G02B5/1847
Inventor 科拉多·希安卡莱波雷侯赛因·埃尔·迪拉尼
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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