Abstract
We have established a portable I2-stabilized Nd:YAG laser for the purpose of making wavelength standards at 532 nm and 1064 nm. All the optical parts of the laser system were arranged on a 45 cm × 45 cm breadboard. The system was transported from NRLM to JILA for frequency comparison. The results of the comparison show that the Allan Variance of the portable laser reached < 3 × 10-13 when the integration time τ is larger than 100 s. The frequency differences between the NRLM and JILA lasers during 3-day measurements were consistent within ± 35 Hz (at 1064 nm), but the matrix-averaged standard deviation of about 310 Hz, and offset are regarded as not yet fully satisfactory. The stability of the portable laser was further improved to about 3 × 10-14 (at the flicker floor, τ = 300 s) by using a longer iodine cell and several frequency stabilization techniques.
Original language | English |
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Pages (from-to) | 2-10 |
Number of pages | 9 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 3477 |
DOIs | |
Publication status | Published - 1998 |
Externally published | Yes |
Event | Recent Developments in Optical Gauge Block Metrology - San DIego, CA, United States Duration: 1998 Jul 20 → 1998 Jul 21 |
Keywords
- Comparison of laser frequency
- High resolution spectroscopy
- Laser frequency stabilization
- Modulation-transfer spectroscopy
- Optical frequency standard
- Wavelength standard
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering