Self-injection-locked laser device and molecular information output device

By using a temperature adjustment element to maintain a constant base plate temperature in a self-injection locking laser device, and combining this with a reference resonator to provide optical feedback, the problem of changes in optical path length and resonator length caused by environmental variations is solved, thereby achieving stability of laser linewidth and improved self-injection locking.

CN122459979APending Publication Date: 2026-07-24NICHIA CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NICHIA CORP
Filing Date
2024-10-23
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing self-injection locked laser devices are susceptible to environmental changes, with significant variations in optical path length and resonator length, leading to unstable laser linewidth.

Method used

A first base plate and a first cover are used to cover the semiconductor laser source and the reference resonator. The temperature of the base plate is kept constant by a temperature adjustment element to reduce the changes in the optical path length and the resonator length. Combined with the reference resonator, optical feedback is provided to achieve self-injection locking.

Benefits of technology

It effectively reduces the impact of environmental changes on optical path length and resonator length, maintains stable laser linewidth, and improves the self-injection locking effect of the laser.

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Abstract

Provided is a self-injection locking type laser device in which variations in environmental changes, optical path length, and resonator length are less likely to occur. The self-injection locking type laser device includes a first base plate, a second base plate, a temperature adjustment element disposed between the first base plate and the second base plate, a semiconductor laser light source disposed on the first base plate, a reference resonator disposed on the first base plate, located on an optical path of laser light emitted from the semiconductor laser light source, and including at least a first mirror and a second mirror for providing optical feedback to the semiconductor laser light source, a first cover covering the semiconductor laser light source and the reference resonator and in contact with the first base plate, and a second cover covering the first cover and in contact with the second base plate.
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Citation Information

Patent Citations

  • Optical element module and method for producing the same

    JP2012068407A