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Towards sympathetic cooling of trapped ions with laser-cooled Mg+ ions for mass spectrometry and laser spectroscopy. Radu Cazan. M. Bussmann, Int.J.MassSpec. 251 , 179(2006). The Purpose. Setup of a system for cooling ions in a trap to a very low temperature, regardless of their

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slide1

Towardssympatheticcoolingoftrappedionswithlaser-cooled Mg+ ionsformassspectrometryandlaserspectroscopy

Radu Cazan

the purpose

M. Bussmann, Int.J.MassSpec. 251, 179(2006)

The Purpose
  • Setup of a system for cooling ions in a trap to a very low temperature,
  • regardless of their
  • - charge state,
          • - energy level structure or
          • - other parameters
          • ->sympathetic cooling by laser cooled Mg ions.
first resonator1
First resonator

EnhancementfactorA~40-60

P559=325 mW

for P1118=970 mW

~775 mW coupled

first resonator resized refurbished laser
First resonator - resized & refurbishedlaser

Smaller cavity:

+ increased FSR =

+ increased bandwidth

+ better stability

- up to 10% less output in our case

P=1.85 W in

twomodes +

0.45 W A.S.E.

P559=170-210 mW

for P1118~1050 mW

?% ASE & 2nd mode

Maximum c.e.~57%

=>P1118~600 mW

second resonator1
Second resonator

P279=16.7 mW max

~15 mW average

Enhancementfactor A~60-70

for P559~210 mW

~170 mW coupled