Photonics for Material Processing
Photonics for Material Processing , Professor
Kazuo Hasegawa
Ph.D
We aim to contribute to the industrial world by understanding the essence of academic research and promoting the creation of added-value by enhancing the functionality of fiber lasers.
Keywords:
- Laser processing
- Laser processing method/laser head development
- Laser development (fiber laser, solid-state laser)
- Energy conversion
- Optical measurement technology
- Optical integrated circuit
- Electromagnetics
Specialty:
High-performance fiber laser
We have developed a technology (HOFG: Higher-Order Fiber Grating) that directly inscribes a fiber laser resonator mirror into the core of a gain fiber using an ultrashort pulse laser. This method has no fusion points in the laser cavity and has higher controllability of the laser oscillation mode than FBG (Fiber Bragg Grating) which is a conventional method. It will be applied to the mode control of high-power fiber lasers.
Proposal of laser processing method suitable for processing characteristics
We have proposed the added value of laser processing by designing a laser head that best suits the processing characteristics for each laser processing process.
The beam pattern technology improved with various optical components can be applied to control the heat input distribution.
Solar pumped laser and its energy application
We aimed to use the energy conversion of the laser through the development of a solar pumped laser (fiber laser a small rod laser). Using transparent ceramics technology, we have designed a gain medium structure that matches the characteristics of a solar pumped laser and succeeded in loosening the tracking accuracy of the sun. The technology accumulated in the development process can be applied to the high performance of solid-state lasers and the improvement of lasers for laser processing.
We have developed a technology (HOFG: Higher-Order Fiber Grating) that directly inscribes a fiber laser resonator mirror into the core of a gain fiber using an ultrashort pulse laser. This method has no fusion points in the laser cavity and has higher controllability of the laser oscillation mode than FBG (Fiber Bragg Grating) which is a conventional method. It will be applied to the mode control of high-power fiber lasers.
Proposal of laser processing method suitable for processing characteristics
We have proposed the added value of laser processing by designing a laser head that best suits the processing characteristics for each laser processing process.
The beam pattern technology improved with various optical components can be applied to control the heat input distribution.
Solar pumped laser and its energy application
We aimed to use the energy conversion of the laser through the development of a solar pumped laser (fiber laser a small rod laser). Using transparent ceramics technology, we have designed a gain medium structure that matches the characteristics of a solar pumped laser and succeeded in loosening the tracking accuracy of the sun. The technology accumulated in the development process can be applied to the high performance of solid-state lasers and the improvement of lasers for laser processing.
Shinichiro Okihara
Ph.D
We support from introduction of laser processing to application use.
Specialty:
Laser processing, Laser engineering, and Laser plasma
Keywords:
Laserprocessing (CW laser and milli-second, femto-second pulse laser)
Optical measurement for laserprocessing:
Ultra high-speed phenomenon measurement(High-speed camera, streak camera)
Measurement ofultrafast low-light-levelphenomena (PMT, fluorescent screen)
Equipment development:
System design of a laser head, measurement and laserprocessing. Development of a medical implement.
Generation and measurement of high enery particle beam(electron, ion) induced by high-intensity laser.
Optical measurement for laserprocessing:
Ultra high-speed phenomenon measurement(High-speed camera, streak camera)
Measurement ofultrafast low-light-levelphenomena (PMT, fluorescent screen)
Equipment development:
System design of a laser head, measurement and laserprocessing. Development of a medical implement.
Generation and measurement of high enery particle beam(electron, ion) induced by high-intensity laser.
