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Seeking a Postdoctoral Researcher or Research Scientist (W21194)


Tera-Photonics Research Team
RIKEN Center for Advanced Photonics
(Laboratory head: Hiroaki Minamide)

Research Field

In our team, we aim the development of state-of-the-art frequency-tunable THz-wave sources which exploit new THz-wave application fields. Nonlinear optical process is utilized for realizing the THz-wave source which light up the THz-wave gray zone, and our original design and method will be demonstrated. We will develop THz sources with high output, wide tunability, high stability, and narrow linewidth. Active collaborations with internal and external research groups will be carried out for exploration of new application by development of instrument combined with new THz-wave sources. Advanced THz-wave technologies will be also developed in cooperation with industries to establish practical THz-wave sources and technologies in the world.

For more information, please refer to the Tera-Photonics Research Team's website.

Job title and Job description

Job title, available positions

Postdoctoral Researcher or Research Scientist 1 - 3 positions

  • -Postdoctoral Researcher is defined as those with a doctoral degree of 5 years or less.
  • -Research Scientist is defined as those with a doctoral degree more than 5 years.

*Job judgment will be decided and decided based on applicant's ability, aptitude etc.

Job description

The successful candidate will carry out advanced terahertz-wave (THz-wave) researches based on nonlinear optics, including THz-wave parametric sources, up-conversion THz-wave detection, THz-wave applications with the developed technologies. In particular, the candidate will carry out the research on backward THz-wave parametric oscillator and up-conversion detection with inverse process mainly. Those researches described above are basically identified with the team’s research orientation. And the collaborative researches with academia or companies are took part in. The detailed job will be discussed. He/she is expected to conduct research and development on topics specified above and to contribute to the management of the laboratory.

Essential qualifications of the applicant are as follows.

  • -Scientific knowledge and research experience on THz wave
  • -Scientific knowledge and research experience on high-power laser and nonlinear optical technique
  • -Scientific knowledge and research experience on both of THz photonics devices and THz electrical devices


Doctoral degree (or equivalent research ability and background) in the relevant research field before the work start date

Work location

Branch and address

RIKEN Sendai Campus (519-1399 Aoba, Aramaki-aza, Aoba-ku, Sendai, Miyagi, Japan)

Salary and benefits

  • 1.A one-year fixed-term employment contract, renewable based on evaluation, to a maximum of 7 years of employment (Research Scientist)or to a maximum 5 years(Postdoctoral Researcher) of employment.
  • 2.RIKEN may adjust the above maximum period of renewability based on a) the employee’s abilities, workload at the time of contract completion, performance and work attitude and b) the continuation of the employee’s center, laboratory or project and RIKEN’s management situation and budget at the time. In principle, employment contracts will not be renewed for individuals older than 65 years.
  • 3.The employee’s period of fixed-term employment cannot exceed 10 years from the initial date of hire (or 10 years from April 1, 2013 for fixed-term employees already at RIKEN prior to this date).
  • 4.When the center to which the Employee is affiliated is scheduled for a final review in FY2024 and it is decided that the Employee's research will not be continued, the provision given above for projects of limited duration applies and the Employee's contract will not be renewed for the FY2025 year that would extend employment beyond the center's final fiscal year.
  • 5.For Research Scientist: When the Employee's research is scheduled for review in the Employee's 5years from the original date of hire at RAP, and when it is concluded that there is reason* to believe it will be difficult for the research to be continued, the employment contract will not be renewed for the next year. (*The reason may relate to the Employee's abilities, performance and/or work attitude.)

In principle, the first two months of employment is considered a trial period.
Salary will be commensurate with qualifications and experience. Discretionary work, commuting and housing allowances will be provided. Social insurance will be applied. Mandatory membership in the RIKEN Mutual Benefit Society (RIKEN Kyosaikai).
This position falls under the specialized duties discretionary work system; one working day will be calculated as 7 hours and 30 minutes.

Days off include public holidays, New Year's holidays (Dec. 29 - Jan 3), and RIKEN Foundation Day.
Paid leave includes annual paid leave (up to 20 days depending on the month of employment), special paid leave (childcare, family nursing care, etc.), and work life balance holidays (up to 7 days depending on the month of employment).
There are also additional leave systems such as maternity leave, childcare leave, and family nursing care leave.
RIKEN has introduced telework as a temporary and special measure to prevent the spread of COVID-19. You may be asked to work from home according to the instructions of the institute. You can also choose to work from home with the permission of your supervisor.
No smoking on site (designated smoking areas available).
These and other provisions are in accordance with RIKEN regulations.

RIKEN is actively undertaking initiatives to promote gender equality and diversity, and moving forward with the establishment of a diverse and vibrant research environment. If multiple candidates are found to have the same aptitude following a fair assessment, active efforts will be made to recruit female candidates.

Also, eligible for an exemption from repayment for category 1 scholarship loans provided by the Japan Student Services Organization before fiscal year 2003, and eligible applying for the MEXT Grants-in-Aid for Scientific Research (Kakenhi).

Application and required documents

Required documents

  • 1.Complete CV or CV (with photo and email address)
    • *(RIKEN CV) Write the open call ID “W21194”, indicated in the parentheses next to the job title, in open call ID section in the upper right corner of your CV.
    • *(Original CV) Write down in the notes section of your CV the number written next to the title of the job position (e.g. W21194).
  • 2.Research and development achievements (list of publications, list of patents, list of presentations etc.)
  • 3.Lists of external funds received, awards received, and other achievements including contribution to society through activities in scientific societies, joint research projects, technology transfers, and the like.
  • 4.Outlines of your research and development projects to date (3 pages, A4 size)
  • 5.One set of copies of your major papers (maximum number: 3)
  • 6.A letter of recommendation from person who can evaluate your work (the referee)
    • It must be from your current supervisor or academic advisor.
    • Please specify the referee’s contact information (Name, affiliation, job title, phone number, and email address)
    • If none of your current supervisors or academic advisors can prepare a letter of recommendation, a letter from a third person will be accepted.
  • 7.Consent form for handling personal information based on GDPR
    If you are a resident of the European Economic Area (EEA), you are required to submit the document, "Consent form for handling personal information based on GDPR" with your signature.

    *You will find detailed information about General Data Protection Regulation (GDPR) on the following website:
    Data protection | European Commission

How to apply

Cloud storage

The above documents except the recommendation letters combined into a single ZIP file or PDF file should be uploaded to the following website:

For Postdoctoral Researcher or Research Scientist, Tera-Photonics Research Team, Center for Advanced Photonics, RIKEN

The uploaded file name should contain your name.
When you upload the file, your contact email address is required.
After you uploaded the file, please notify the file name of the uploaded file to the e-mail address at contact information below.

Recommendation letters must be directly submitted from the referee to the following website with the subject line "Center for Advanced Photonics, position name [applicant’s name] (Recommendation letter)". Please specify the applicant's name, referee's name and contact information in the recommendation letter and include applicant's name in file name.

For Postdoctoral Researcher or Research Scientist, Tera-Photonics Research Team, Center for Advanced Photonics, RIKEN

The uploaded file name should contain your name.
When the referee uploads the file, contact email address is required.
After the referee uploaded the file, please notify the file name of the uploaded file to the e-mail address at contact information below.

If a confirmation email is not received within 7 days after submission, please contact: the e-mail address at contact information below.

Postal mail

Send the application documents or recommendation letter by registered postal mail indicating “Enclosed application documents” on the envelope.
Note: Application documents will not be returned.


Open until the position is filled

Handling Personal Data

Submitted documents are strictly protected under the RIKEN Privacy Policy and will be used only for the purpose of applicant screening. Personal information will not be disclosed, transferred or loaned to a third party under any circumstances without just cause.

Selection process

Application screening and interview for selected applicants

Start of Employment

As early as possible

Contact Information

Tera-Photonics Research Team, RIKEN Center for Advanced Photonics
519-1399 Aramaki-aza Aoba, Aoba-ku, Sendai, Miyagi, Japan
Postal code: 980-0845
Email: mihoko.yamashita [at] riken.jp
For inquiries, please send an email.


  • Updated as of Dec 15, 2021: "Deadline"
  • Updated as of Jan 21, 2022: "Deadline" and "Start of Employment"