Abstract: The authors have designed an optical intersatellite link (ISL) transmitter which uses a high power laser diode (LD) amplifier so as to achieve a high output power, fast frequency response and good beam profile, all simultaneously. Calculation results indicated that a good beam profile could be achieved with a traveling-wave type (TW) broad area LD amplifier when an input beam is focused just in front of the input facet of the LD amplifier. Experiment results also showed that optical output power is controllable as a parameter of the injection current to the LD amplifier.!
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