Title :
A compact tunable narrow-band LD based on emission through the substrate and an external abnormal-reflection mirror
Author :
Baidus, N.V. ; Salakhutdinov, I.F. ; Hoekstra, H.J.W.M. ; Zvonkov, B.N. ; Nekorkin, S.M. ; Sychugov, V.A.
Author_Institution :
Inst. of Phys. & Technol. Res., Nizhni-Novgorod, Russia
Abstract :
Due to the high beam divergence of standard laser diodes (LDs), these are not suitable for wavelength-selective feedback without extra optical elements. This letter reports on first prototypes of compact tunable LDs with wavelength-selective feedback via a so-called abnormal reflecting mirror of a low divergent beam coming from a special LD, emitting through the substrate. With this setup, tunable narrow-band (<0.7 nm) lasing is observed showing good temperature stability. Tuning over a range of 5 nm at a maximum power of 0.2 W was demonstrated.
Keywords :
laser beams; laser feedback; laser mirrors; laser stability; laser tuning; quantum well lasers; 0.2 W; InGaAs-GaAs-InGaP; abnormal reflecting mirror; compact tunable LDs; compact tunable narrow-band LD; external abnormal-reflection mirror; good temperature stability; high beam divergence; low divergent beam; maximum power; optical elements; standard laser diodes; substrate; tunable narrow-band lasing; wavelength-selective feedback; Diode lasers; Laser beams; Laser feedback; Mirrors; Narrowband; Optical feedback; Prototypes; Stimulated emission; Temperature; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
