Beam stability of buried-heterostructure quantum cascade lasers employing HVPE regrowth

Ha Ryu, JaeUniv Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA. (författare)

QC 20210217
Measurements of beam stability for mid-infrared (IR)-emitting quantum cascade lasers (QCLs) are important for applications that require the beam to travel through air to remote targets, such as free-space communication links. We report beam-quality measurement results of narrow-ridge, 4.6 mu m-emitting buried-heterostructure (BH) QCLs fabricated using ICP etching and HVPE regrowth. Beam-quality measurements under QCW operation exhibit M-2 < 1.2 up to 1 W for similar to 5 mu m-wide ridges. 5 mu m-wide devices display some small degree of centroid motion with increasing output power (< 0.125 mrad), which corresponds to a targeting error of similar to 1.25 cm over a distance of 100 m.

Kirch, Jeremy D.Univ Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA. (författare)
Knipfer, BenjaminUniv Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA. (författare)
Liu, ZeruiUniv Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA. (författare)
Turville-Heitz, MorganIntraband LLC, 200 N Prospect Ave, Madison, WI 53726 USA. (författare)
Earles, TomIntraband LLC, 200 N Prospect Ave, Madison, WI 53726 USA. (författare)
Marsland, Robert A.Intraband LLC, 200 N Prospect Ave, Madison, WI 53726 USA. (författare)
Strömberg, AxelKTH,Fotonik(Swepub:kth)u16koivb (författare)
Omanakuttan, GiriprasanthKTH,Fotonik(Swepub:kth)u1japbst (författare)
Sun, Yan-TingKTH,Fotonik(Swepub:kth)u126yqo4 (författare)
Lourdudoss, Sebastian,1953-KTH,Fotonik(Swepub:kth)u16044fg (författare)
Botez, DanUniv Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA. (författare)
Mawst, Luke J.Univ Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA. (författare)
Univ Wisconsin, Dept Elect & Comp Engn, 1415 Engn Dr, Madison, WI 53706 USA.Intraband LLC, 200 N Prospect Ave, Madison, WI 53726 USA. (creator_code:org_t)

Av författaren/redakt...: Ha Ryu, Jae; Kirch, Jeremy D.; Knipfer, Benjami ...; Liu, Zerui; Turville-Heitz, ...; Earles, Tom; visa fler...; Marsland, Robert ...; Strömberg, Axel; Omanakuttan, Gir ...; Sun, Yan-Ting; Lourdudoss, Seba ...; Botez, Dan; Mawst, Luke J.; visa färre...

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