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Optics Letters

Optics Letters


  • Vol. 25, Iss. 12 — Jun. 15, 2000
  • pp: 899–901

Amplitude-modulation-free optoelectronic frequency control of laser diodes

B. Bodermann, H. R. Telle, and R. P. Kovacich  »View Author Affiliations

Optics Letters, Vol. 25, Issue 12, pp. 899-901 (2000)

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A novel method is described for fast frequency modulation or frequency control of diode lasers that avoids problems associated with bias current modulation, namely, amplitude modulation and thermal phase delays. The method is based on amplitude-modulated, noninterfering control light with a wavelength near the transparency region of the laser diode, which specifically modifies the spectral gain profile to yield a constant gain but a controllable refractive index at the lasing wavelength. This permits amplitude-modulation-free frequency modulation at modulation frequencies up to the relaxation oscillation frequency. A phase lock between the emissions of two extended-cavity diode lasers that could not be achieved with bias current modulation was achieved by this method.

© 2000 Optical Society of America

OCIS Codes
(060.2630) Fiber optics and optical communications : Frequency modulation
(140.2020) Lasers and laser optics : Diode lasers

B. Bodermann, H. R. Telle, and R. P. Kovacich, "Amplitude-modulation-free optoelectronic frequency control of laser diodes," Opt. Lett. 25, 899-901 (2000)

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