Journal article Open Access

Double-heterodyne probing for ultra-stable laser based on spectral hole burning in a rare-earth doped crystal

Galland, N.; Lučić, N.; Zhang, S.; Alvarez-Martinez, H.; Le Targat, R.; Ferrier, A.; Goldner, P.; Fang, B.; Seidelin, S.; Le Coq, Y.


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{
  "DOI": "10.1364/OL.389833", 
  "author": [
    {
      "family": "Galland, N."
    }, 
    {
      "family": "Lu\u010di\u0107, N."
    }, 
    {
      "family": "Zhang, S."
    }, 
    {
      "family": "Alvarez-Martinez, H."
    }, 
    {
      "family": "Le Targat, R."
    }, 
    {
      "family": "Ferrier, A."
    }, 
    {
      "family": "Goldner, P."
    }, 
    {
      "family": "Fang, B."
    }, 
    {
      "family": "Seidelin, S."
    }, 
    {
      "family": "Le Coq, Y."
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2020, 
        4, 
        8
      ]
    ]
  }, 
  "abstract": "<p>We present an experimental technique for realizing a specific absorption spectral pattern in a rare-earth-doped crystal at cryogenic temperatures. This pattern is subsequently probed on two spectral channels simultaneously, thereby producing an error signal allowing frequency locking of a laser on the said spectral pattern. Appropriate combination of the two channels leads to a substantial reduction of the detection noise, paving the way to realizing an ultra-stable laser for which the detection noise can be made arbitrarily low when using multiple channels. We use such technique to realize a laser with a frequency instability of&nbsp;1.7&nbsp;&times;&nbsp;10&minus;15&nbsp;at 1 second, not limited by the detection noise but by environmental perturbation of the crystal. This is comparable with the lowest instability demonstrated at 1 second to date for rare-earth doped crystal stabilized lasers.</p>", 
  "title": "Double-heterodyne probing for ultra-stable laser based on spectral hole burning in a rare-earth doped crystal", 
  "type": "article-journal", 
  "id": "3744243"
}
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