1. Development of a laser system for combining 3 laser beams
Aleksandar Lukić

2. overview of optical components
designing the system
optimizing the system
results

3. overview of optical components
designing the system
optimizing the system
results

4. reflecting prisms
laser diodes
collimating optics

5. overview of optical components
designing the system
optimizing the system
results

6. previous design as template

7. previous design as template
+ very accurate adjustment
+ good beam profile

8. previous design as template
+ very accurate adjustment
+ good beam profile
- unmanageable internal structure
- huge milling effort

9. targets
downsizing the dimensions

10. targets
downsizing the dimensions
reduction of used components to avoid loss
of output power and unnecessary expense

11. targets
downsizing the dimensions
reduction of used components to avoid loss
of output power and unnecessary expense
easily accessible optical components in order to save time and costs during assembly

12. symmetrical body (laser diodes in one line)

13. results
+ simplification of the layout
+ good beam profile

14. results + simplification of the layout + good beam profile
- positioning of the reflecting prisms very difficult and sensitive
- very time-consuming

15. asymmetrical body (laser diodes in two planes)

16. results + minimal number of optical component
+ acceptable beam quality
+ time- and space-saving assembly

17. overview of optical components
designing the system
optimizing the system
results

18. compromise between output power and aesthetics
to achieve good beam profile with acceptable
loss of power the laser beams are cut down to
95% of initial power by the reflecting prisms

19. adjustment of the laser diodes operating current
maximum operating current 200 mA with tolerance of 10-20%
overrunning the limit by 20 mA increases the total output power up to 450 mW

20. adjustment of the laser diodes operating current
maximum operating current 200 mA with tolerance of 10-20%
overrunning the limit by 20 mA increases the total output power up to 450 mW
only possible with adequate cooling system

21. overview of optical components
designing the system
optimizing the system
results

22. suitble for series production

23. suitble for series production
cost-optimized assembly

24. suitble for series production
cost-optimized assembly
collateral development
of an appropriate laser driver unit