4.6-W Single Frequency Semiconductor Disk Laser With {<}75{-}kHz Linewidth Rantamaki, Antti ; Chamorovskiy, Alexander ; Lyytikainen, Jari ; Okhotnikov, Oleg Abstract Publication: IEEE Photonics Technology Letters Pub Date: August 2012 DOI: 10.1109/LPT.2012.2204736 Bibcode: 2012IPTL...24.1378R