Microdisk lasers feature low-loss, high-quality whispering gallery modes1,2,3 that offer the potential for ultralow-threshold lasing4,5,6,7 that is not limited by challenges in mirror fabrication. Here we report fabrication and optical measurements of GaN-based microdisk lasers with a very low threshold of 300 W cm−2—orders of magnitude lower than any previous GaN microdisk laser. This is also the first report of room-temperature, continuous-wave (CW) lasing in a GaN microdisk.
Your institute does not have access to this article
Open Access articles citing this article.
Nature Communications Open Access 24 February 2022
Scientific Reports Open Access 02 December 2019
Scientific Reports Open Access 08 November 2018
Subscribe to Journal
Get full journal access for 1 year
only $8.25 per issue
All prices are NET prices.
VAT will be added later in the checkout.
Tax calculation will be finalised during checkout.
Get time limited or full article access on ReadCube.
All prices are NET prices.
Lord Raleigh . The Problem of the Whispering Gallery, in Scientific Papers, Vol. 5, 617–620 (Cambridge Univ. Press, Cambridge, 1912).
McCall, S. L., Levi, A. F. J., Slusher, R. E., Pearton, S. J., & Logan, R. A. Whispering-gallery mode microdisk lasers. Appl. Phys. Lett. 60, 289–291 (1992).
Mohideen, U., Slusher, R. E., Jahnke, F., & Koch, S. W. Semiconductor microlaser linewidths. Phys. Rev. Lett. 73, 1785–1788 (1994).
Slusher, R. E. et al. Threshold characteristics of semiconductor microdisk lasers. Appl. Phys. Lett. 63, 1310–1312 (1993).
Seassal, C. et al. InP microdisk lasers on silicon wafer: CW room temperature operation at 1.6 µm. Electron. Lett. 37, 222–223 (2001).
Hovinen, M. et al. Blue-green laser emission from ZnSe quantum well microresonators. Appl. Phys. Lett. 63, 3128–3130 (1993).
Michler, P. et al. Laser emission from quantum dots in microdisk structures. Appl. Phys. Lett. 77, 184–186 (2000).
Chang, S., Rex, N. B., Chang, R. K., Chong, G. & Guido, L. J. Stimulated emission and lasing in whispering-gallery modes of GaN microdisk cavities. Appl. Phys. Lett. 75, 166–168 (1999).
Rex, N. B., Chang, R. K. & Guido, L. J. Threshold lowering in GaN micropillar lasers by means of spatially selective optical pumping. IEEE Photon. Technol. Lett. 13, 1–3 (2001).
Mair, R. A. et al. Optical modes within III-nitride multiple quantum well microdisk cavities. Appl. Phys. Lett. 72, 1530–1532 (1998).
Haberer, E. D. et al. Free-standing, optically pumped, GaN/InGaN microdisk lasers fabricated by photoelectrochemical etching. Appl. Phys. Lett. 85, 5179–5181 (2004).
Haberer, E. D. et al. Observation of high Q resonant modes in optically pumped GaN/InGaN microdisks fabricated using photoelectrochemical etching. Phys. Stat. Sol. C 2, 2845–2848 (2005).
Park, S. H. et al. Room-temperature GaN vertical-cavity surface-emitting laser operation in an extended cavity scheme. Appl. Phys. Lett. 83, 2121–2123 (2003).
Chu, J. T. et al. Room-temperature operation of optically pumped blue-violet GaN-based vertical-cavity surface-emitting lasers fabricated by laser lift-off. Jpn. J. Appl. Phys. 45, 2556–2560 (2006).
Levi, A. F. J. et al. Directional light coupling from microdisk lasers. Appl. Phys. Lett. 62, 561–563 (1993).
Aleksiejunas, R. et al. Carrier transport and recombination in InGaN/GaN heterostructures, studied by optical four-wave mixing technique. Phys. Stat. Sol. C 0, 2686–2690 (2003).
Haberer, E. D. et al. Removal of thick (>100 nm) InGaN layers for optical devices using bandgap-selective photoelectrochemical etching. Appl. Phys. Lett. 85, 762–764 (2004).
Coldren, L. A. & Corzine, S. W. Diode Lasers and Photonic Integrated Circuits 40 (John Wiley & Sons, New York, 1995).
The authors would like to thank Y.-S. Choi for advice about processing and optical measurements and K. Hennessey for help with FDTD simulations. Funding for this work was provided by DMEA under the Center for Nanoscience Innovation for Defense. A.C.T. is supported by the Department of Defense NDSEG fellowship. K.H.L. thanks Wingate Foundation for assisting with the research visit to UCSB.
The authors declare no competing financial interests.
About this article
Cite this article
Tamboli, A., Haberer, E., Sharma, R. et al. Room-temperature continuous-wave lasing in GaN/InGaN microdisks. Nature Photon 1, 61–64 (2007). https://doi.org/10.1038/nphoton.2006.52
Nature Communications (2022)
Science China Information Sciences (2021)
Nature Materials (2019)
Scientific Reports (2019)
Scientific Reports (2018)