Your Search Results

Use this resource - and many more! - in your textbook!

AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.

Experience the freedom of customizing your course pack with AcademicPub!
Not an educator but still interested in using this content? No problem! Visit our provider's page to contact the publisher and get permission directly.

Optical pumping injection cavity (OPIC) for high-efficiency mid-IR "W" lasers

By: Meyer, J.R.; Stokes, D.W.; Olafsen, L.J.; Vurgaftman, I.; Bewley, W.W.; Felix, C.L.; Yang, M.J.;

1999 / IEEE / 0-7803-5634-9

Description

This item was taken from the IEEE Conference ' Optical pumping injection cavity (OPIC) for high-efficiency mid-IR "W" lasers ' We report a new optical pumping injection cavity (OPIC) approach that combines a high pump absorbance with long pump wavelength and a thin active layer. High absorbance is achieved by tuning an etalon cavity to the pump wavelength, which brings about multiple passes of the pump beam through the active region. A 12- 1/2 period distributed Bragg reflector (DBR) consisting of alternating AlAs/sub 0.08/Sb/sub 0.92/ and GaSb layers was grown onto the GaSb substrate. The 2/spl lambda//sub pump/ central cavity consisted of a 0.51 /spl mu/m thick GaSb spacer, a 100 /spl Aring/ AlAs/sub 0.08/Sb/sub 0.92/ hole-blocking layer, a l0-period InAs/GaSb/InAs/AlAsSb (17 /spl Aring//35 /spl Aring//17 /spl Aring//44 /spl Aring/) W active region, another hole-blocking layer, and another spacer. The OPIC pump cavity was completed by a 7-period top GaSb/AlAsSb DBR. Although the OPIC is resonant in the vertical direction at /spl lambda//sub pump/, at the mid-IR wavelength, the mirror stacks function as cladding layers and the spacers function as high-index separate confinement regions. Thus the laser operates in an edge-emitting configuration. Pumping was by 107 ns pulses from a 2.098 /spl mu/m Ho:YAG laser, operating at a repetition rate of 1 Hz.