Laser oscillation method and laser device
AssigneesRiken, NEC Tokin Corporation, Megaopto Co., Ltd.
InventorsSatoshi Wada, Takayo Ogawa, Hideo Tashiro, Hiroshi Machida, Mikio Higuchi, Kohei Kodaira, Tomohiro Shonai
Life of this patent
Estimating the term…
Abstract
To provide a laser oscillation method and a laser device, which use a laser medium such as an Nd:GdVO4 crystal to which neodymium is doped in high concentration exceeding 1% in atomicity ratio, the laser medium comprised of the gadolinium-vanadate crystal to which neodymium as laser active ion is doped by a floating zone method such that concentration becomes exceeding 1% in atomicity ratio.
Claims21
A laser oscillation method where pumping light pumps a laser medium to perform laser oscillation wherein:
- said method utilizes the laser medium comprised of a gadolinium-vanadate crystal to which neodymium as laser active ion is doped by a floating zone method such that concentration becomes 2% to 15% in atomicity ratio.
A laser oscillation method where pumping light pumps a laser medium to perform laser oscillation wherein:
- pumping of the pumping light in a wavelength band different from a wavelength band, which is a main absorption band, performs laser oscillation to a laser medium comprised of crystal to which laser active ion is doped in a predetermined concentration, which is fabricated by a floating zone method.
A laser oscillation method where pumping light pumps a laser medium to perform laser oscillation wherein:
- pumping of the pumping light in a wavelength band different from a wavelength band of 808 nm, which is a main absorption band, performs laser oscillation to a laser medium comprised of gadolinium-vanadate crystal to which neodymium as laser active ion is doped such that concentration exceeds 1% in atomicity ratio.
A laser oscillation method where pumping light pumps a laser medium to perform laser oscillation wherein:
- pumping of the pumping light in a wavelength band different from a wavelength band of 808 nm, which is a main absorption band, performs laser oscillation to a laser medium comprised of a gadolinium-vanadate crystal to which neodymium as laser active ion is doped such that concentration becomes 2% to 15% in atomicity ratio.
A laser device where a laser medium is arranged in a resonator, pumping light is made incident in said laser medium to generate laser oscillation in said resonator, and laser beam is made exit from said resonator wherein:
- said laser medium is a laser medium comprised of a crystal to which laser active ion is doped in a predetermined concentration, which is fabricated by a floating zone method.
A laser device where a laser medium is arranged in a resonator, pumping light is made incident in said laser medium to generate laser oscillation in said resonator, and laser beam is made exit from said resonator wherein:
- said laser medium is a gadolinium-vanadate crystal to which neodymium as laser active ion is doped such that concentration exceeds 1% in atomicity ratio.
A laser oscillation method where pumping light near 880 nm excites Nd ion from ground state to 4F3/2 line of Nd ion.
Dependencies are inferred from the claim text.