We have calculated the threshold powers for the thermal oscillatory instability as functions of the diffraction parameter and the laser pump wavelength for high-Q water aerosol droplets. The integrated overlap coefficients of the thermal and electromagnetic modes have been estimated by asymptotic methods. We have found the threshold power of the thermal instability to be comparable in order of magnitude to that of the stimulated Raman scattering and the thermal instability in spherical resonators of fused silica, 0.1 mW at the pump wavelength λ p = 0.532 μm for a droplet radius of 5.3 μm. Measurements and estimations of the threshold power are of importance in applications as an additional method for remote temperature measurement and control of the evaporation-condensation rate for a droplet containing photoactive impurities, dyes, and polymer nanoparticles, based on the eigenfrequency shift in the stimulated Raman scattering and lasing spectra.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
A. A. Zemlyanov and Y. E. Geints, J. Opt. Soc. Amer. B 20, 2492 (2003).
S. Judith, S.-X. Qian, and R. Chang, Opt. Lett. 10, 37 (1985).
G. Chen, W. P. Acker, R. K. Chang, and S. C. Hill, Opt. Lett. 16, 117 (1991).
J.-Z. Zhang, G. Chen, and R. K. Chang, J. Opt. Soc. Amer. B 7, 108 (1990).
H.-M. Tzang, K. F. Wall, M. B. Long, and R. K. Chang, Opt. Lett. 9, 499 (1984).
G. Kurizki and A. Nitzan, Phys. Rev. A 38, 267 (1988).
D. Braunstein, A. M. Khazanov, G. A. Koganov, and R. Shuker, Phys. Rev. A 53, 3565 (1996).
H.-B. Lin, A. L. Huston, B. J. Justus, and A. J. Campillo, Opt. Lett. 11, 614 (1986).
G. V. Belokopytov, Vestn. Mosk. Gos. Univ., Ser. Fiz. Astron., no. 3, 11 (1997).
S. Arnold, K. M. Leung, and A. Pluchino, Opt. Lett. 11, 800 (1986).
J. Popp, M. Lankers, K. Schaschek, et al., Appl. Opt. 34, no. 13, 2380 (1995).
A. E. Fomin, M. L. Gorodetsky, I. S. Grudinin, and V. S. Ilchenko, J. Opt. Soc. Amer. B 22, 459 (2005).
V. B. Braginsky, M. L. Gorodetsky, and V. S. Ilchenko, Phys. Rep. A 137, 393 (1989).
G. V. Belokopytov and M. V. Zhuravlev, Izv. VUZov, Radiofiz. XLIII, no. 2, 162 (2000).
G. V. Belokopytov and N. P. Pushechkin, Pis’ma Zh. Tekh. Fiz. 17,Issue 22, 71 (1991).
Original Russian Text © M.V. Zhuravlev, 2009, published in Optika Atmosfery i Okeana.
About this article
Cite this article
Zhuravlev, M.V. Asymptotic estimates of threshold power for laser excitation of thermal instability for high-Q resonant modes in water aerosol droplets. Atmos Ocean Opt 22, 158–161 (2009). https://doi.org/10.1134/S1024856009020043
- Stimulate Raman Scattering
- Thermal Instability
- Pump Wavelength
- Threshold Power
- Droplet Temperature