Lasers and Current Optical Techniques in Biology: Comprehensive Series in Photochemistry and Photobiology, Volume 4

By Riccardo Pratesi

List of Figures

Chapter 1: Gas State Lasers

Figure 1: Energy levels of helium and neon and showing laser transitions in neon.
Figure 2: Relevant energy levels for the argon ion laser.
Figure 3: (a) Tunable solid-state and dye lasers pumped by argon ion laser. (b) Tuning ranges for dyes and titanium: sapphire lasers. (Coherent Inc.).
Figure 4: Arrangement for second harmonic generator of argon ion laser lines. (Coherent Inc.).
Figure 5: Potential energy level diagram of the ArF excimer laser. The transient bound state of ArF and the laser transition at 193 nm is shown.
Figure 6: CO ₂ vibrational modes and the lowest vibrational levels and laser transitions, energy transfer from N ₂ is indicated.
Figure 7: Energy levels of the N ₂ molecule showing the two groups of laser transitions.
Figure 8: Energy levels and laser transitions relevant to the He-Cd laser.
Figure 9: Relevant energy levels of the copper vapour and gold vapour lasers.

Figure 1: Singlet and triplet electronic energy levels for a dye molecule with some vibrational levels indicated, absorption and fluoresce spectra, and radiative and nonradiative transitions.
Figure 2: Absorption and fluorescence normalized spectra of rhodamine 6G in ethanol.
Figure 3: Tuning performance of dye lasers with pumping by (a) nitrogen lasers, (b) krypton fluoride or xenon chloride excimer lasers, (c) Nd:YAG. laser (Exciton Inc.)
Figure 3: Tuning performance of dye lasers with pumping by (a) nitrogen lasers, (b) krypton fluoride or xenon chloride excimer lasers, (c) Nd:YAG.

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