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SUMMARY:Generation of a Laguerre-Gaussian TEM01 mode in a monolithic micro
 chip laser
DTSTART;VALUE=DATE-TIME:20110714T150000Z
DTEND;VALUE=DATE-TIME:20110714T170000Z
DTSTAMP;VALUE=DATE-TIME:20260711T202210Z
UID:indico-contribution-4874@events.saip.org.za
DESCRIPTION:Speakers: Darryl Naidoo (Council for Scientific and Industrial
  Research)\nWe explore a method in the selection of a specific higher-orde
 r mode through judicious shaping of the pump light to create a high modal 
 overlap with the desired mode. To demonstrate this principle\, we create a
  donut-shaped pump profile in the focal plane of a converging lens by use 
 of a beam shaping element. This pump profile is used to longitudinally pum
 p a monolithic microchip laser and a plano-concave resonator cavity where 
 we achieve a TEM01 output with powers of ~12 mW and ~14 mW at slope effici
 encies of 17% and 21% respectively. In both cases the modal purity is high
  with a beam quality factor of ~2. Diffractive pump shaping of this form i
 s advantageous as it allows for high pump intensity even with low pumping 
 powers\, thus ensuring sufficient gain is achieved for laser oscillation.\
 n\nhttps://events.saip.org.za/event/7/contributions/4874/
LOCATION: Asteria
URL:https://events.saip.org.za/event/7/contributions/4874/
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