A portable I2-stabilized Nd:YAG laser for wavelength standards at 532 nm and 1064 nm

Feng Lei Hong, Jun Ishikawa, Tai Hyun Yoon, Long Sheng Ma, Jun Ye, John L. Hall

Research output: Contribution to journalConference articlepeer-review

14 Citations (Scopus)


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 languageEnglish
Pages (from-to)2-10
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1998
Externally publishedYes
EventRecent Developments in Optical Gauge Block Metrology - San DIego, CA, United States
Duration: 1998 Jul 201998 Jul 21


  • 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


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