No abstract

No abstract

No abstract

No abstract

Optical phonon-assisted emission of dark excitons controls the intensity and maximum position of σ− and σ+ polarized photoluminescence of CdSe nanocrystals.

Passive mode locking of a continuous wave diodepumped Tm:KYW laser at 1.94 μm was demonstrated by using glass doped with PbS quantum dots as a saturable absorber. The laser operated in Q-switched mode-locking regime. Conversion efficiency of free-running output power to output power of pulsed operation was estimated at 30%.Intensity, a.u.

No abstract

No abstract