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Seeking a Postdoctoral Researcher (W21187)


Advanced Laser Processing Research Team
RIKEN Center for Advanced Photonics
(Team Leader: Koji Sugioka)

Research Field

Our research team aims at research and development of advanced laser processing which realizes low environmental load, high quality, high efficiency fabrication of materials. Specifically, by using femtosecond and picosecond lasers that emit ultrashort pulses with an extremely high peak intensity, we develop the techniques enabling AI-based processing, three-dimensional micro/nnaofabrication, superresolution fabrication, and high aspect ratio machining, which are applied to fabrication of biochips, high sensitivity sensors, and high function photonic and electronic microdevices.

Job title and Job description

Job title

Postdoctoral Researcher 1 position

Postdoctoral Researcher is defined as those with a doctoral degree of 5 years or less.

Job description

The successful candidate is involved in the MEXT Quantum-LEAP project on Cyber Physical System (CPS) manufacturing based on photonic science: Development of CPS laser processing workstation. Specifically, the candidate is expected to conduct experimental research on high quality, high efficiency laser processing using spatially and/or temporally shaped beams including mechanism studies and its application for practical use.


The candidate should possess a doctoral degree by experimental study in the laser processing field, or the candidate will be able to obtain a doctoral degree by experimental study in the laser processing field before the work start date. Experience of development of optical systems for laser processing, pump – probe measurements, etc. is preferred.

Work location

Branch and address

RIKEN Wako (2-1 Hirosawa, Wako, Saitama 351-0198)

Salary and benefits

  • 1.A one-year fixed-term employment contract, renewable based on evaluation, to a maximum of 5 years of employment.
  • 2.RIKEN may adjust the above maximum period of renewability based on a) the employee’s abilities, work load 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.

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)
    Use RIKEN CV Form. *Write the open call ID “W21187”, indicated in the parentheses next to the job title, in open call ID section in the upper right corner of your CV.
  • 2.List of research achievements and publications
  • 3.Summary of research achievements (A4: 1-2 pages)
  • 4.Research Plan or proposal which should be related to the subject written in “Job description” (A4: 1-2 pages)
  • 5.A letters of recommendation including one from the current supervisor
    Please specify the referee’s contact information (Name, affiliation, job title, phone number, and email address)
    (If the current supervisor’s recommendation is not available, a recommendation letter from a third party will be accepted)
  • 6.Copies (pdf files) of your major papers (up to 3 papers)
  • 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

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, Advanced Laser Processing 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.
If you cannot access the above link, please contact the e-mail address at contact information below.

Recommendation letters must be directly submitted from the referees 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, Advanced Laser Processing Research Team, Center for Advanced Photonics, RIKEN

The uploaded file name should contain your name.
When the referees upload the file, contact email address is required.
After the referees 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.


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

Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics
2-1 Hirosawa, Wako, Saitama 351-0198
Email: ksugioka [at] riken.jp
For inquiries, please send an email.