Review Reports

Round 1

Reviewer 1 Report

see attached.

Comments for author File: Comments.pdf

Author Response

We have studied the valuable comments from you carefully, and tried our best to revise the manuscript. please find the details in the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

- The article presents InGaAsSb/AlGaAsSb multi quantum well with carrier blocking layer. Simulations and experiment are done and both indicate that the carrier blocking layer improves the recombination rates and reduces leakage.

- The manuscript presents concise but complete presentation of the experimental results and provides sufficient background and literature survey.

- Please ensure that language is grammatically correct and intended meaning of the text comes through effectively.

- In figure 3, please indicate which plot is figure 3a and which is 3b. Please indicate the location of the carrier blocking layer in figure 3.

Author Response

We have studied the valuable comments from you carefully, and tried our best to revise the manuscript. please find the details in the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

English need very serious improvement.

Why nor to call carrier blocking layer and Electron Blocking Layer (EBL), this is very popular term.

There is no overview of the state of the art for this technology. What are the parameters of good lasers based on this material system? Is it a first attempt to add the blocking layer?

Practically all figures are difficult to read, the lines (specially dotted) are invisible (Fig. 5).

Figure 5 with Auger recombination, in my opinion does not make sense. Auger recombination is an intrinsic process depending on the cube of carrier concentration. The figure does not bring new information. 

Figure 3 unclear, what is rhe meaning of the shadowed areas.

Giving the threshold current and slope efficiency with 3 digits precision is not serious.

The experimental results should compare two real structures one with and one without blocking layer. The only one structure does not mean anything.

Is the obtained results outstanding, medium or bad?

Author Response

We have studied the valuable comments from you and reviewers carefully, and tried our best to revise the manuscript.Please find the details in the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Some small typos and grammatical errors, check again before publishing.

Reviewer 3 Report

This paper is very carefully corrected (even experimental part has been extended).

It is now absolutely suitable for publication.