1. Progress Report Speaker: Shiuan-Li Lin Advisor : Sheng-Lung Huang Solid-State Laser Crystal and Device Laboratory

2. Page 2 Outline  RSOFT:grating design & efficiency  Backward diffraction loss  Conclusion  Calendar Solid-State Laser Crystal and Device Laboratory

3. Page 3 RSOFT:grating design & efficiency  Index(at 1532nm): Au:0.549+9.702i (luxpop) Silica base:1.4443(luxpop) Borosilicate:1.454 Outer clad(UV373):1.373 Solid-State Laser Crystal and Device Laboratory Au Silica Base Index matching gel Core:Er YAG Cladding:borosilicate Light input :1532nm 40um 80um 250um 5mm TIR angle: Inner-clad & outer-clad : 70.78° Silica base : 72.15° 1 st order ref.

4. Page 4 Backward diffraction loss  Grating period function :  To improve efficiency: 1.Silica base increased 2.cladding size increased Solid-State Laser Crystal and Device Laboratory

5. Page 5 Backward diffraction loss  The index of Au (luxpop) : 0.549+9.702i  Using ellipsometry to measure the real index Solid-State Laser Crystal and Device Laboratory

6. Page 6 Conclusion Solid-State Laser Crystal and Device Laboratory  The result : Period : 1.065 μm depth : 0.145 μm width : 0.280 μm Efficiency : 88.26% without backward diffraction loss  RSOFT simulation : parallel light input with small angle  ZEMAX simulation : to optimize the parallel beam onto the grating

7. Page 7 Calendar Solid-State Laser Crystal and Device Laboratory  每月中會有一次 group meeting report  下個月前會 preview 目前進度以及規劃下個月的方向 MonthPlanning 2月2月 RSOFT(grating) 3月3月 ZEMAX(light source) & Summary of Simulation 4 月 ~6 月 E-beam lithograthy 7 月 ~8 月 Er;YAG fiber measurment 9 月 ~10 月 system combined 11 月 ~12 月總結討論

8. Page 8 Solid-State Laser Crystal and Device Laboratory bee6565 Thanks for your listening!