Thermal aberration analysis of a laser-diode-pumped Nd. YAG laser

Shigeo Kubota, Michio Oka, Yushi Kaneda, Hisashi Masuda

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


A recently developed powerful GaAlAs laser diode (LD) has excellent spectral match to absorption band of Nd:YAG crystal (808nm) and can be focused into a spot which well coincides with the fundamental laser resonator mode. These properties of the LD allow to build an efficient diode-pumped Nd:YAG laser. We have stabilized an intra-cavity frequency-doubled Nd:YAG laser with a KTiOPO4 (KTP) doubler using a quarter wave plate (QWP) to decouple the polarization mode interaction inside the cavity. With this technique, relative intensity noise (RIN) of -160 dB/Hz was obtained at 0 dBm input. The shot noise-limited green laser can be used in read out of a tripled density optical disk in NTSC format and in MUSE format.

Original languageEnglish (US)
Pages (from-to)572-580
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1990
EventInternational Lens Design Conference - Monterey, CA, USA
Duration: Jun 11 1990Jun 14 1990

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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