4.6 Article

An intense, cold, velocity-controlled molecular beam by frequency-chirped laser slowing

Journal

NEW JOURNAL OF PHYSICS
Volume 19, Issue -, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aa5ca2

Keywords

laser cooling; molecules; radiation pressure slowing

Funding

  1. EPSRC under grants [EP/I012044, EP/M027716]
  2. European Research Council under the European Union's Seventh Framework Programme / ERC [320789]
  3. European Research Council (ERC) [320789] Funding Source: European Research Council (ERC)
  4. Engineering and Physical Sciences Research Council [EP/I012044/1, 1584525, EP/M027716/1] Funding Source: researchfish
  5. Science and Technology Facilities Council [ST/N000242/1] Funding Source: researchfish
  6. EPSRC [EP/I012044/1, EP/M027716/1] Funding Source: UKRI
  7. STFC [ST/N000242/1] Funding Source: UKRI

Ask authors/readers for more resources

Using frequency-chirped radiation pressure slowing, we precisely control the velocity of a pulsed CaF molecular beam down to a few m s(-1), compressing its velocity spread by a factor of 10 while retaining high intensity: at a velocity of 15 m s(-1) the flux, measured 1.3. m from the source, is 7 x 10(5) molecules per cm(2) per shot in a single rovibrational state. The beam is suitable for loading a magneto-optical trap or, when combined with transverse laser cooling, improving the precision of spectroscopic measurements that test fundamental physics. We compare the frequency-chirped slowing method with the more commonly used frequency-broadened slowing method.

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