By coupling a cw GaAlAs-diode laser to an external resonator with Fabry–Perot etalons as dispersive elements, emission was reduced to a single-axial mode of 32-MHz width. The wavelength could be coarsely tuned over a spectral range of over 10 nm. Fine tuning over about 500 MHz was achieved by varying the external cavity length by less than λ/3. At single-axial-mode operation, the commonly observed high- and low-frequency self-pulsing of the light output was found to disappear almost completely.
© 1977 Optical Society of America
Original Manuscript: April 21, 1977
Published: August 1, 1977
C. Voumard, "External-cavity-controlled 32-MHz narrow-band cw GaAlAs-diode lasers," Opt. Lett. 1, 61-63 (1977)