| Budget Amount *help |
¥43,810,000 (Direct Cost: ¥33,700,000、Indirect Cost: ¥10,110,000)
Fiscal Year 2022: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2021: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2020: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Fiscal Year 2019: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Fiscal Year 2018: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
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| Outline of Final Research Achievements |
We are developing narrow-linewidth and highly-stable frequency-stabilized lasers for applications of optical frequency combs and clocks. We developed an frequency-stabilized Nd:YAG laser using a 2 m long iodine cell with a frequency stability of 1.9×10-14 at 1 s averaging time. We have shown that the laser stability will saturate when the length of the iodine cell is too long, using both theoretical calculations and experiments. Furthermore, we generated the third harmonics of a 1542 nm external cavity diode laser and used it for saturation spectroscopy of molecular iodine and laser frequency stabilization. Laser linewidth narrowing based on an optical fiber Michelson interferometer and laser frequency stabilization based on molecular iodine were simultaneously realized (hybrid stabilization).
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