Applied Physics B

, Volume 76, Issue 2, pp 135–141

Efficient generation of blue light by frequency doubling of a Nd:YAG laser operating on 4F3/24I9/2 transitions


  • S. Bjurshagen
    • Acreo AB, Electrum 236, 164 40 Kista, Sweden
  • D. Evekull
    • Acreo AB, Electrum 236, 164 40 Kista, Sweden
  • R. Koch
    • Acreo AB, Electrum 236, 164 40 Kista, Sweden

DOI: 10.1007/s00340-002-1079-1

Cite this article as:
Bjurshagen, S., Evekull, D. & Koch, R. Appl Phys B (2003) 76: 135. doi:10.1007/s00340-002-1079-1


Efficient room-temperature operation of 4F3/24I9/2 transitions in diode-end-pumped Nd:YAG lasers at 946 nm and 938.5 nm is reported. 7.0-W continuous-wave output power at 946 nm and 3.9 W at 938.5 nm have been obtained. An analytical model has been developed for the quasi-three-level laser including the influence of energy-transfer upconversion. Frequency doubling of these transitions in periodically poled KTP generated blue light at 473 nm and 469 nm. Both single-pass extra-cavity as well as intracavity schemes have been investigated.

PACS: 42.55.Xi; 42.65.Ky

Copyright information

© Springer-Verlag 2003