Details

Autor(en) / Beteiligte

• Morimoto, Ryohei
• Goto, Taichi
• Taira, Takunori
• Pritchard, John
• Mina, Mani
• Takagi, Hiroyuki
• Nakamura, Yuichi
• Lim, Pang Boey
• Uchida, Hironaga
• Inoue, Mitsuteru

Titel

Randomly polarised beam produced by magnetooptically Q-switched laser

Ist Teil von

• Scientific reports, 2017-11, Vol.7 (1), p.15398-6, Article 15398

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2017

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Diode-pumped solid-state micro lasers are compact (centimetre-scale), highly stable, and efficient. Previously, we reported Q-switched lasers incorporating rare-earth substituted iron garnet (RIG) film. Here, the first demonstration of the magnetooptical (MO) Q-switch in an Nd:YAG laser cavity is performed. We fabricate a quasi-continuous-wave (QCW) diode-pumped Nd:YAG laser cavity, which is shortened to 10 mm in length and which contains an RIG film and a pair of small coils. This cavity yields a 1,064.58-nm-wavelength pulse with 25-ns duration and 1.1-kW peak power at a 1-kHz repetition ratio. Further, the polarisation state is random, due to the isotropic crystal structure of Nd:YAG and the fact that the MO Q-switch incorporating the RIG film does not require the presence of polarisers in the cavity. This is also the first report of an MO Q-switch producing random polarisation.