Abstract Diode-pumped solid-state micro case of whispering angel 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 israil iphone 14 pro max 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.