Construction of spectroscopic database for THz-wave region is extremely important to activate basic research and commercial applications of THz-wave. In cooperation with NICT we have developed THz-wave spectroscopic database, disclosing it online since 2009 (http://www.thzdb.org/). The database covers much variety materials such as living organ tissues, polymer macro molecules, sugar groups, agricultural chemicals, various organic and inorganic materials. Total number of posting data has exceeded 1200. Our database is accessed 3500 times in one year and running as capital THz database because of superior quantity and quality to other databases at overseas site. In addition, our database was adopted as priority subject of Grant-in-Aid for Publication of Scientific Research Result (KAKENHI). Now the database is under reconstruction to be more user-friendly. We also have plan in the near future to expand the database by updating new data offered from outside research institutions.
