Page 179 - Tunable Lasers Handbook
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SERVO                    FREQUENCY    4                      PRINTER
                                                            AMPLIFIER             ~   DISCRIMINATOR


                               CURRENT
                                SUPPLY                     LINE-CENTER
                                                            STABILIZED
                                                            CO  OR  CO                MICROWAVE
                                                            RE~RENCE                  SYNTHESIZER   .(                  COMPUTER
                                                              LASER                    0-18  GH~

                                  f
                               TUNABLE
                              DIODE  LASER                                                                              FREQUENCY
                                 (TDU











                               FREQUENCY-LOCKED  DIODE  LASER
                               OUTPUT  FOR  PRECISELY  TUNABLE
                               HIGH  RESOLUTION  SPECTROSOPY




                                  FIGURE 27  Block diagram of an accurate, continuously tunable, conlpiite~-contlolIcd, kiIoheriz-resoIution IR-frequency syntIlesim-.
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