1. Part IV: Optical Spectroscopy of Solids
Atilla AYDINLI

2. Outline Experimental Setup Elements of Raman Spectroscopy
Monochromator
PMT
Laser
Elements of Raman Spectroscopy
Introduction to Photoluminescence Spectroscopy

3. U1000

4. U1000

5. Slits

6. Reflection Grating

7. Transmission Grating

8. Grating Equation

9. Grating Equation

10. Grating Equation
Littrow Configuration

11. Grating Equation Deviation angle Scan angle
Grating equation for mounts

12. Sin-Drive; Cosecant-Drive

13. Diffraction Order

14. Order Overlap

15. Dispersion
Angular Dispersion
Linear Dispersion

16. Dispersion Reciprocal Linear Dispersion (nm/mm)
2.43 nm/mm for U1000 w/ 1800 g/mm grating

17. Resolving Power

18. Focal Length and F/#

19. F/# Matching Over match: Loss of signal
Under match: Loss of resolving power
Choose collection optics geometry to match it to the F# of the monochromator

20. PMT

21. PMT

22. Spectral Responsivity

23. PMT

24. Transfer Function/Throughput
Polarization dependent
Wavelength dependent
Ideal light source? No!
Use a black body at a known temp
Use calibrated W lamp
With known incident spectral light density measure output and calculate T.
Important for PL exp not so for Raman.