Homojunction lead--tin--telluride diode lasers with increased frequency tuning range

Journal Article · Mon Aug 01 04:00:00 EDT 1977 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1977.1069429· OSTI ID:5268039

Lo, W

Homojunction lead--tin--telluride (Pb/sub 1-x/Sn/sub x/Te) diode lasers with a cw frequency tuning range of 216 cm-/sup 1/ (near lambda = 8 ..mu..m) were fabricated from a Te-rich, ingot-nucleated crystal. The increased frequency tuning range is attributed to a reduced threshold current density, which allows a higher operating temperature. At a heat-sink temperature of 11.2/sup 0/K, the threshold current density (J/sub th/) is 212 A cm-/sup 2/. The highest heat-sink temperature recorded for these lasers is 61/sup 0/K with a corresponding J/sub th/ of 1.75 x 10/sup 3/ A cm-/sup 2/. The longest, continuous current tuning (at 17/sup 0/K) of one mode is 2.4 cm-/sup 1/. At a constant current, the temperature tuning of the same mode is 0.9 cm-/sup 1/. The lasers generally emit a single mode for current levels below 12.5 percent of J/sub th/. Single-mode, single-ended output powers up to 0.9 mW have been recorded.

• Research Organization: General Motors Corp., Warren, MI
• OSTI ID: 5268039
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-13:8; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CHALCOGENIDES
FABRICATION
LASERS
LEAD COMPOUNDS
LEAD TELLURIDES
PERFORMANCE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
TELLURIDES
TELLURIUM COMPOUNDS
TIN COMPOUNDS
TIN TELLURIDES