MEASUREMENT UNCERTAINTY OF THE OPTICAL WAVELENGTH CALIBRATION 633 nm BY BEAT FREQUENCY MEASUREMENT METHODS
نویسندگان
چکیده
منابع مشابه
Absolute Frequency Measurement of the Iodine-Stabilized Heâ‹TMNe Laser at 633 Nm
The absolute frequency of an iodine-stabilized He−Ne laser at 633 nm stabilized on the i (or a13) component of the 11-5 R(127) hyperfine transition of the I2 molecule is measured using a femtosecond optical comb generator and an iodine-stabilized Nd:YAG laser standard at 1064 nm. We link the measured absolute frequency to the current internationally adopted value via frequency intercomparison b...
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− The National Institute of Metrology (Thailand), NIMT, maintains the standard of length in accordance with the definition of the meter through a 633 nm iodine stabilized He-Ne laser. Its accuracy is transferred to stabilized and non-stabilized lasers regarding to beatfrequency method and direct measurement using a wavelength meter, respectively. The traceability in wavelength measurement at th...
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ژورنال
عنوان ژورنال: Instrumentasi
سال: 2020
ISSN: 2460-1462,0125-9202
DOI: 10.31153/instrumentasi.v44i2.220