Nanowatt threshold, alumina sensitized neodymium laser integrated on silicon

Maker, Ashley J.; Armani, Andrea M.

doi:10.1364/oe.21.027238

Cited by 20 publications

(12 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A lot of geometries (spheres, torus [14], disks [15]) and materials have been studied since the first demonstration of solid state WGM micro-resonator lasing [3]. These particular lasers have been extensively studied in terms of oscillation threshold [3,16], output power performances [17] and spectral purity [18]. Otherwise the phase or frequency noise of semiconductor or fiber lasers including a WGM resonator has been studied [19,20].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental analysis of rare earth whispering gallery mode laser relative intensity noise

Ceppe¹,

Mortier²,

Féron³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

The relative intensity noise (RIN) of a solid state whispering-gallery-mode class-B laser is studied both theoretically and experimentally under different pumping regimes. In particular, we show that harmonics of the spiking frequency are observed in the RIN spectrum. A rate equation model including Langevin forces and the nonlinear coupling between inverted ion and photon number fluctuations has been developed to reproduce the experimental results and to extract relevant physical parameters from the fitting of the RIN spectrum. * yannick.dumeige@univ-rennes1.fr

show abstract

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental analysis of rare earth whispering gallery mode laser relative intensity noise

Ceppe¹,

Mortier²,

Féron³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Another method for developing microlasers from optical cavities is by directly embedding or intercalating secondary materials, such as rare-earth elements, into the microcavity [14][15][16] . The addition of the sensitizer improves the excitation efficiency and reduces the lasing threshold.…”

Section: Introductionmentioning

confidence: 99%

“…The addition of the sensitizer improves the excitation efficiency and reduces the lasing threshold. For example, Yb-Er co-doped microlasers have considerably lower thresholds than Er microlasers due to the presence of the excited Yb, which increases the efficiency of Er lasing [14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Titanium enhanced Raman microcavity laser

2014

Self Cite

View full text Add to dashboard Cite

Due to their long photon lifetimes, ultra high quality factor (Q) silica microcavities form an ideal platform for microlaser development. Previous work verified that these devices exhibit Raman lasing, because the high Q compensates for the low Raman gain of silica. However, only devices with Q>1E8 are able to achieve microwatt thresholds, limiting the application space. One approach for overcoming this barrier is to increase the inherent Raman gain of the material without degrading the optical performance of the device. To address this challenge, we synthesize a series of titanium (Ti) doped silica sol-gels with different concentrations of Ti, including a null. The refractive indices of the coatings are characterized using spectroscopic ellipsometry and increase linearly with the concentration of Ti from 1.44 to 1.51. We apply the sol-gel as a conformal coating on silica toroidal microcavities and characterize the basic cavity properties (Q) and the lasing behavior, including the lasing threshold and the slope efficiency. All measurements are performed in ambient conditions. Although the cavity Q's are modest (5E6), comparable lasing thresholds (microwatt) to higher Q silica devices are achieved because of the reduction in mode volume and the increase in Raman gain due to the presence of the Ti. Additionally, the efficiency of the laser increases with increasing Ti concentration.

show abstract

“…Therefore, a higher Q is desirable. In fact, WGM microresonators have been successfully used to achieve low threshold lasing emission in the near infrared [5][6][7][8][9][10][11][12][13][14][15] ; however, lasing in the blue has not been achieved. In the present work, we fabricate high Q-factor silica microtoroids on a silicon chip from thulium doped sol-gels.…”

Section: Introductionmentioning

confidence: 99%

Low-threshold integrated microlaser emitting in the blue formed from thulium doped silica

Mehrabani

Armani

2014

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

While there are several methods for creating a blue microlaser, most have very high lasing thresholds and are not integrated on a silicon substrate. The present work demonstrates a blue laser based on the upconversion of thulium in a doped silica sol-gel microtoroid resonant cavity integrated on a silicon wafer. The thulium is pumped at 1060nm, and emission occurs near 780nm and 450nm. The high intensity of the circulating optical field in the microcavity increases the photon interaction pathlength and interaction time with the thulium atoms, enabling sub-mW thresholds at both blue and near-IR lasing emissions.

show abstract

Nanowatt threshold, alumina sensitized neodymium laser integrated on silicon

Cited by 20 publications

References 30 publications

Theoretical and experimental analysis of rare earth whispering gallery mode laser relative intensity noise

Theoretical and experimental analysis of rare earth whispering gallery mode laser relative intensity noise

Titanium enhanced Raman microcavity laser

Low-threshold integrated microlaser emitting in the blue formed from thulium doped silica

Contact Info

Product

Resources

About