18 June 2004 Radio-frequency spectra of long-cavity diode lasers under CW pumping
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Abstract
High-frequency spectra of free-running 5-mm-long triple-quantum-well graded-index separate-confinement heterostructure broad-area diode lasers emitting at ~1 μm are investigated in the range of 1-20 GHz using RF spectrum analyzer. The spectra reveal stable beat lines at ~8 and ~16 GHz, corresponding to single and double mode spacings between adjacent longitudinal modes. A current-dependent peak, varying from 0.6 to 2 GHz, is associated with the relaxation resonance. Measurements of mode beating spectra provide additional characterization of diode laser emission for coherent light applications.
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Chiyu Liu, Hongjun Cao, Marcita Benavidez, Hai Ling, Hui Su, Gregory M. Peake, Petr G. Eliseev, Marek Osinski, "Radio-frequency spectra of long-cavity diode lasers under CW pumping", Proc. SPIE 5349, Physics and Simulation of Optoelectronic Devices XII, (18 June 2004); doi: 10.1117/12.540321; https://doi.org/10.1117/12.540321
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