US 11,721,953 B2
Electrically pumped vertical cavity laser
Vijaysekhar Jayaraman, Goleta, CA (US); Stephen Segal, Columbia, MD (US); and Kevin Lascola, Columbia, MD (US)
Assigned to Thorlabs, Inc., Newton, NJ (US); and Praevium Research, Inc., Goleta, CA (US)
Filed by Thorlabs, Inc., Newton, NJ (US); and Praevium Research, Inc., Santa Barbara, CA (US)
Filed on Oct. 8, 2019, as Appl. No. 16/595,891.
Claims priority of provisional application 62/742,637, filed on Oct. 8, 2018.
Prior Publication US 2020/0112140 A1, Apr. 9, 2020
Int. Cl. H01S 5/183 (2006.01); H01S 5/34 (2006.01); H01S 5/042 (2006.01); H01S 5/065 (2006.01); H01S 5/343 (2006.01); G01J 3/10 (2006.01); H01S 5/06 (2006.01); H01S 5/10 (2021.01)
CPC H01S 5/18327 (2013.01) [G01J 3/108 (2013.01); H01S 5/042 (2013.01); H01S 5/0612 (2013.01); H01S 5/0651 (2013.01); H01S 5/101 (2013.01); H01S 5/1014 (2013.01); H01S 5/18313 (2013.01); H01S 5/18347 (2013.01); H01S 5/18366 (2013.01); H01S 5/18377 (2013.01); H01S 5/3402 (2013.01); H01S 5/343 (2013.01); H01S 5/3422 (2013.01); H01S 5/34306 (2013.01)] 54 Claims
OG exemplary drawing
 
52. An electrically pumped room temperature continuous-wave (RTCW) vertical cavity laser (VCL) having an optical cavity and emitting at an emission wavelength, said VCL comprising a plurality of layers, a multi-layer first mirror, a multi-layer second mirror, a gain region which comprises at least one gain type from the group consisting of a type I GaSb-based multi-quantum well, type I GaSb-based cascaded quantum wells, a type II GaSb-based multi-quantum well, and a type II InP-based multi-quantum well, said VCL further comprising a first n-type charge injection contact, a second n-type charge injection contact, and a refractive index waveguide comprising an inner region of a higher distributed refractive index and an outer region of lower distributed refractive index, wherein said higher distributed refractive index exceeds said lower distributed refractive index by less than about 0.12.