1. Controlling Matter with Light Robert J. Gordon University of Illinois at Chicago DUV-FEL Seminar January 6, 2004 NSF, DOE, PRF, UIC/CRB, Motorola

2. Outline Dissociative Ionization Molecular Optics Coherent Control Material Processing

3. Photodissociation of C 6 H 5 I at 266 nm J. Phys. Chem. A 105, 2001 (2001)

4. Mechanism at 266 nm Outer Feature Inner Feature

5. Photodissociation of C 6 H 5 I at 532 nm J. Phys. Chem. A 105, 2001 (2001)

6. Photodissociation of I 2 532 nm 564 nm 559 nm 575 nm PRL 86, 2241 (2001)

7. Kinetic Energy of Iodine 556.0 nm 574.7 nm

8. Dissociative Ionization

9. Dissociative Ionization of H 2 J. Phys. B 30, 2319 (1997) JCP 104, 8449 (1996)

10. Possible FEL Experiments 90 – 100 nm single photon excitation Pump-probe photoelectron-photoion coincidence (Hayden) Photoelectron angular distributions of aligned molecules

11. Manipulating Molecules With Light Alignment Orientation Deflection Focusing Trapping

12. Interaction with a Focused Laser Beam Intensity Potential Force

13. Dipole Interaction Gaussian electric field Dipole potential r  deflection & focusing   alignment & orientation

14. Dipole Force Gaussian field Induced potential U 0 (K) = 15 α // (  3 ) I(TW/cm 2 )

15. Deflecting Molecules in Different M J States E |M| = J M = 0 Li 2 Seideman, 107, 10420 (1997)

16. Stark Shift

17. CCD 1064 nm 358 nm tof ms MCP Molec. Beam Apparatus

18. CS 2 Deflection

19. YanDu

20. Joyce Joyce Willig

21. Sujatha Unny

22. /n6/n6  /n 6 10 3  l n 3  -  l -2 e-e- Seideman, JCP 111, 4397 (1999). Dynamic Polarizability

23. Molecular Mirror Classical forced oscillator : Sign reversal at high frequency

24. Possible FEL Experiments Deflect molecules in high Rydberg states Use a near-resonant deflection field

25. F. Crim Passive Control of Chemical Reactions

26. Active Control of Chemical Reactions

27. Interference Between Competing Paths P = P 1 + P 2 + P 12 P = |f 1 + f 2 | 2 = |f 1 | 2 + |f 2 | 2 + f 1 f 2 * + f 1 * f 2

28. Shapiro, Hepburn, and Brumer, Chem. Phys. Lett. 149, 451 (1988). Coherent Phase Control of Bound-Bound Transitions

29. Apparatus

30. Langchi Zhu

31. Phase Tuning

32. Controlling Branching Ratios S = A S = B

33. JPC

34. The Phase Lag

35. The Channel Phase The Phase Lag

36. Molecular Phase

37. Resonance Phase

38. Phase Lag Spectrum of HI

39. Coupling Schemes

40. CH 2 =CHCl +  3, 3  1 Cl H HCl H2H2

41. VCl Experimental Setup Polarizer Nd:YAG Laser 532 nm /2 Plate Excimer Laser 308 nm Dye Laser 404.6 nm TOF/MS  3 =3  1  1 Hg Tripling Cell

42. Vishal Barge

43. Possible FEL Experiment Coherent phase control of the ionization and dissociation of the Q 1 states of H 2

44. Wave Packet Control

45. Possible FEL Experiment Pump-probe study of time-resolved intersystem crossing in pyrazine Wave packet control of ISC

46. Pyrazine Intersystem Crossing Ion S1S1 S0S0 T1T1 C4N2H4C4N2H4

47. Photoelectron Spectrum of Pyrazine JCP 95, 2237 (1991)

48. Material Processing Biomedical applications Microfluidics Nano-fabrication

49. Machining Collagen Scaffolds Micro-groovesMesenchymal Stem Cells

50. Biocompatibility of Collagen Scaffold

51. Possible FEL Experiment Subdiffraction nanomachining Appl. Phys. B 77, 25 (2003)