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Power Laser Systems Engineering (PLS) Lab
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The lab develops power lasers with the world's highest average output power.
AboutAbout the lab
Realizing “smart power lasers” to solve global challenges
The Power Laser Systems Engineering Group focuses on research and development of power lasers with the world's highest average output power. It also studies new laser materials, new methods of laser oscillation and amplification, and beam control technologies.
The lab calls multipurpose systems that can be designed on demand through modularization “smart power lasers,” and aims at a wide range of applications including laser processing, fluorescence analysis, and laser fusion.
Students are assigned to the lab as the cooperating research group “Laser Science Research Area” of the Quantum Information Electronics Section in the Division of Electrical, Electronic and Infocommunications Engineering, School and Graduate School of Engineering.
Undergraduates who wish to join the lab must belong to the Quantum Information Electronics Course in the Department of Electronic and Information Engineering, School of Engineering.
Key terms
- Repetition rate
- The number of laser pulses that can be emitted per second. The next-generation SENJU aims for 100 pulses per second.
- Peak power
- The instantaneous power of a laser pulse. Shortening the pulse duration yields a high value with little energy.
- Petawatt
- A unit of power equal to 1,000 trillion watts. The peak power of the LFEX laser is 2 petawatts.
- Laser ceramics
- Ceramics used as the medium that generates laser light. The lab develops and evaluates room-temperature-bonded ones.
NewsLab news
A student won a Poster Award at the 46th Annual Meeting of the Laser Society of Japan
Received the 49th Achievement Award (Progress Award) of the Laser Society of Japan
A student won a Poster Award at the Institute of Laser Engineering year-end report meeting
Professor Yogo received the Japan Society of Applied Physics Paper Award
ResearchResearch themes
Centered on research and development of power lasers, the lab studies lasers that deliver high pulse energy at a high repetition rate and ultrashort-pulse lasers that deliver extremely high peak power. It also develops and evaluates optical elements and optical materials that withstand high laser power, which are essential for building power laser systems.
*Illustrative imageHigh-Repetition-Rate Next-Generation Power Lasers
The lab is developing SENJU, a next-generation power laser that delivers pulse energy on the order of 100 joules. Conventional glass lasers fire about one pulse every 10 minutes to several hours; with advanced cooling technology and ceramic gain media, the lab aims for 100 pulses per second.
*Illustrative imageUltra-High-Intensity Lasers
Shortening the pulse duration as far as possible produces extremely high peak power with little energy. The LFEX laser at the Institute of Laser Engineering, Osaka University, reaches 2 petawatts in 1 picosecond. The lab is aiming for a third-generation technology that compresses pulses to 10 femtoseconds and exceeds 10 petawatts.
*Illustrative imageNew Optical Elements That Withstand Lasers
Building power lasers requires optical elements and optical materials that withstand high laser power. The lab develops and evaluates optical elements with a high laser damage threshold, magneto-optical elements, and room-temperature-bonded laser ceramics.
MembersFaculty
The members of the Power Laser Systems Engineering Group consist of faculty, Project Professors, Project Researchers, Visiting Researchers, and master's and undergraduate students.As of 2026
- ProfessorAkifumi Yogo
- Associate ProfessorKooji Tsubakimoto
- Assistant ProfessorJumpei Ogino
- Assistant ProfessorYuki Tamaru
- Assistant ProfessorGELLETA John
- Project ProfessorNoriaki Miyanaga
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “VULCAN laser hall with disc amplifiers 1986” Colin N. Danson et al. / CC BY 4.0 (cropped)
- High-Repetition-Rate Next-Generation Power Lasers: “High-Power Laser Calibration Facility ( )” National Institute of Standards and Technology / Public domain (cropped)
- Ultra-High-Intensity Lasers: “ODIN Ti-Sapphire laser in operation” FDominec / CC BY-SA 3.0 (cropped)
- New Optical Elements That Withstand Lasers: “Scientist measures the optical limiting performance of a nonlinear material - ALC” Adelphi Lab Center Douglas G. LaFon / CC BY 2.0 (cropped)
- Related lab (ニュークリアフォトニクス
（NP） ): “VULCAN target chamber 2003” Colin N. Danson et al. / CC BY 4.0 (cropped) - Related lab (プラズマフォトニクス
（PPD） ): “Orion target chamber” Colin N. Danson et al. / CC BY 4.0 (cropped) - Related lab (パワーフォトニクス
（PLP） ): “Table Mountain Facility Sends DSOC Laser Beacon to NASA’s Psyche (Infrared Image) (PIA26661)” JPL / Public domain (cropped) - Related lab (レーザー材料科学
（LMO） ): “High-power laser welding” Krorc / CC BY-SA 3.0 (cropped)
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