Red laser dot hi-res stock photography and images - Alamy
PDF) Red and orange laser operation of Pr:KYF4 pumped by a Nd:YAG/LBO laser at 469.1nm and a InGaN laser diode at 444nm
Controlling the dynamics time scale of a diode laser using filtered optical feedback. A.P.A. FISCHER, Laboratoire de Physique des Lasers, Universite Paris. - ppt download