Abstract

By doping a laser dye into two polyurethane layers in a guided-mode resonance (GMR) structure, we observed that the lasing emission can be enhanced by approximately fivefold. The structure comprises, from top to bottom, a grating layer, four alternating layers of polyurethane and ${\rm{T}}{{\rm{a}}_2}{{\rm{O}}_5}$, and a bottom substrate. Two different GMR wavelengths can be generated because of the two films of ${\rm{T}}{{\rm{a}}_2}{{\rm{O}}_5}$ serving as waveguide layers. The enhancement of the lasing emission is achieved by matching both the absorption and emission wavelength of the laser dye with the two GMR wavelengths. When the absorption wavelength matches the GMR wavelength, the formation of high intensity near the polyurethane layer serves to efficiently excite the laser dye. Additionally, as the emission wavelength overlaps with the GMR wavelength, the extraction of lasing intensity can be further increased in the preferred directions owing to the high reflection efficiency and directivity of the GMR. Moreover, we found that the linewidth is reduced to approximately 1.06 nm, and the estimated threshold is approximately ${0.92}\;{\rm{mJ}}/{{\rm{cm}}^2}$ when both excitation and extraction resonances occur in the waveguide structure.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Guided-mode resonance-based bandpass filter operating at full conical mounting

Nabarun Saha and Wen-Kai Kou
Appl. Opt. 59(34) 10700-10705 (2020)

Optical modulation of guided mode resonance in the waveguide grating structure incorporated with azo-doped-poly(methylmethacrylate) cladding layer

Jian Hung Lin, Yu Chung Huang, Ngoc DiepLai, Hung-Chih Kan, and Chia Chen Hsu
Opt. Express 20(1) 377-384 (2012)

Enhanced sensitivity in injection-molded guided-mode-resonance sensors via low-index cavity layers

Yi-Fan Ku, Hsun-Yuan Li, Wen-Hsin Hsieh, Lai-Kwan Chau, and Guo-En Chang
Opt. Express 23(11) 14850-14859 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription