The tunable ridge waveguide distributed Brag g reflector (DBR) lasers grown by selective area growth and designed for WDM communication systems at 1.55 μm is r
The simultaneous operation for the Q- switched Nd: YAG laser at 1.06 and the tunable color-center laser over 1.12~1.26 μm has been realized by using a LiF: F2-