Preparation method for high-power terahertz quantum cascade laser

A quantum cascade, terahertz technology, applied in the field of lasers, can solve the problems of high injection coupling intensity, high current, gain spectrum splitting, etc., to reduce non-radiative recombination centers, large lasing power output, and increase pump current density. Effect

Active Publication Date: 2012-07-04
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0005] However, since the output power of terahertz quantum cascade laser devices is often affected by many factors such as injection and collection barrier width, doping concentration, injection coupling strength, temperature, etc., too wide a potential barrier will affect the injection and collection of electrons. Efficiency, too thin a potential barrier will lead to excessive device current and severe heati

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  • Preparation method for high-power terahertz quantum cascade laser
  • Preparation method for high-power terahertz quantum cascade laser
  • Preparation method for high-power terahertz quantum cascade laser

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[0029] The following describes the implementation of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] figure 1 It is a flow chart of the method for manufacturing the high-power terahertz quantum cascade laser of the present invention.

[0031] In step S1, based on the Monte Carlo simulation method, the electrical transmission and output gain characteristics of the active region of the predetermined structure under multiple different parameters are simulated to obtain an optimized set of parameters.

[0032] Wherein, the active region of th...

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Abstract

The invention provides a preparation method for a high-power terahertz quantum cascade laser, which comprises the following steps: a plurality of electricity transmission and output gain characteristics of a predetermined structural active area under different parameters can be simulated based on a monte carlo simulation method, thereby obtaining a group of optimized parameters; and the terahertz quantum cascade laser with the predetermined structural active area can be prepared based on the obtained one group of parameters. The high-power terahertz quantum cascade laser is prepared based on the parameters obtained by the Monte Carlo simulation method and can output larger-maser luminous power due to the optimized parameters.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a preparation method of a high-power terahertz quantum cascade laser. Background technique [0002] Terahertz (THz) radiation sources are key devices for applications in the THz band. Among the many terahertz radiation generation methods, the semiconductor-based all-solid-state terahertz quantum cascade laser device (THzQCL) has attracted widespread attention once it was invented due to its advantages such as high energy conversion efficiency, small size, portability and easy integration. become a research hotspot in this field. [0003] THzQCL is a coherent THz radiation source for unipolar intersubband transitions, which has the advantages of all-solid-state, electrically pumped, tunable, and easy-to-integrate. Compared with mid-infrared QCL, THz photon energy is small, the energy difference between corresponding laser energy levels is small, and the scattering effect between subbands i...

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Application Information

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IPC IPC(8): H01S5/40H01S5/30H01S5/22
Inventor 曹俊诚黎华
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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