Acousto-optic-modulator diagram

Figure 9.12. Block diagrams of fiberoptic sensing instrumentation Top externally modulated laser with an acousto-optic modulator. (From Ref. 20 with permission.) Bottom internally modulated laser, (From Ref. 21 with permission.)...

Fig. 2. Schematic diagram of the laser system to be used for a measurement of the 2Si/2 2P3y2 transition frequency in Si (A/2 half wave plate, A/4 quarter wave plate, PBS polarizing beamsplitter, VCO voltage-controlled osciUator, AOM acousto-optic modulator, EOM electro-optic modulator)...

Fig. 1. Diagram of the optical path of a fluorescence-imaging system (ACAS 570 Interactive Laser Cytometer). This system consists of a tunable 5W Argon ion laser, an acousto-optic modulator (AOM) to control the duration and intensity of excitation, an inverted microscope with an X-Y scanning stage, a Z-axis stepper motor, and two photomultiplier (PMT) tubes. A computer performs command, control, and analytical routines.

FIGURE 22.14 (a) Schematic representation diagram of the three-beam PM technique that shows two excitation pulses, and one probe pulse and the associated optical transitions induced in the polymer film, (b) Schematic representation diagram of the three-beam experimental setup. Ti S are Ti sapphire lasers OPO is an optical parametric oscillator BBO is barium borate crystal doubler and AOM is acousto-optic modulator. (From Frolov, S.V., et al., Phys. Rev. B, 65, 205209, 2002. With permission.)... 

Fig. 4 (a) The D1 transitions coupled by a fiequency modulated coupling field and two probe fields (one as the signal Qs and another as the control Qc) behaves as the coherently coupled three-level A-type system. The spontaneous decay rate of the excited state 3> is 73 (=271x5.4x10 s for the 5Pi/2 F =3 state), (b) Simplified diagram of the experimental set up. AOM acousto-optic modulator EOM electro-optic modulator, PMF polarization maintaining fiber X/4 quarter-wave plate DL extended-cavity diode laser, M mirror, D photodetector. 

Fig. 10. Schematic diagram of the experimental setup. BS beam splitter L Lens AOM acousto-optic modulator PD photodiode and OS oscilloscope.

Fig. 4 Schematic diagram of a common LDV. Red solid and blue dotted lines denote the paths of the reference and reflected laser beams, respectively. PBS, BS, AOM, and M refer to a partial beam splitter, a beam splitter, an acousto-optic modulator, and a mirror, respectively...

Fig. 20. Schematic diagram of the Synchroscan streak camera system. A Spectra Physics model 164 acousto-optically mode-locked argon ion laser modulated at 69.44MHz pumps the Rhodamine 6G dye laser formed by mirrors Mi, M2, M3 and M4. This dye laser typically produces pulses of 2 ps duration with an energy content of 0.6 nJ. The second harmonic is generated intracavity in an ADP crystal. The UV radiation is then coupled out through mirror Ms and a filter F2 is used to eliminate any transmitted visible light before focusing into the sample cell with lens Lt. The fluorescence is detected at 90 to the incident beam. A lens L2 collects the fluorescence which passes through a polarizer and a bandpass filter and then onto the slit of the streak camera. (After ref. 69.)...

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