Konserttiohjelma 1900-11-15 - Ohjelma

Helsinki 1900

Konserttiohjelma 1907-04-23

Helsingfors 1907

Konserttiohjelma 1913-04-28 - Ohjelma

Helsinki 1913

Konserttiohjelma 1898-12-05 - Ohjelma

Helsinki 1898

Electrical pump & probe and injected carrier losses quantification in Er doped Si slot waveguides

Electrically driven Er3+ doped Si slot waveguides emitting at 1530 nm are demonstrated. Two different Er3+ doped active layers were fabricated in the slot region: a pure SiO2 and a Si-rich oxide. Pulsed polarization driving of the waveguides was used to characterize the time response of the electroluminescence (EL) and of the signal probe transmission in 1 mm long waveguides. Injected carrier absorption losses modulate the EL signal and, since the carrier lifetime is much smaller than that of Er3+ ions, a sharp EL peak was observed when the polarization was switched off. A time-resolved electrical pump & probe measurement in combination with lock-in amplifier techniques allowed to quantify the injected carrier absorption losses. We found an extinction ratio of 6 dB, passive propagation losses of about 4 dB/mm, and a spectral bandwidth > 25 nm at an effective d.c. power consumption of 120 μW. All these performances suggest the usage of these devices as electro-optical modulators.

Lucia di Lammermoor

Pons, Lily (Lucia) ; Votipka, Thelma (Alisa) ; Tucker, Richard (Edgardo) ; Hayward, Thomas (Arturo) ; McCracken, James (Normanno) ; Guarrera, Frank (Enrico) ; Scott, Norman (Raimondo) ; Chorus and Orchestra of the Metropolitan Opera Association, Cleva, Fausto, joht.

Suite no. 2 in b minor

Leopold Stokowski and his symphony orchestra.

[Erekhtheion]

Soitinnus: lauluäänet (sopraano, baritoni), sekakuoro, orkesteri.

Naapurit meistä ja me heistä

Kirjallisuusarvostelu

N:o 1: Morning

Soitinnus: orkesteri.

Loitsu

Pikalevy.

Maamme

Soitinnus: mieskuoro.

Muisto

Soitinnus: sekakuoro.

Solvejgs Lied

Soitinnus: lauluääni, orkesteri.

Kitkat katkat

Sanat: Kanteletar.