Accès public à partir du 15 nov. 2018
Université de Neuchâtel

Carrier-envelope offset frequency stabilization of a gigahertz semiconductor disk laser

Jornod, Nayara ; Gürel, Kutan ; Wittwer, Valentin J ; Brochard, Pierre ; Hakobyan, Sargis ; Schilt, Stéphane ; Waldburger, Dominik ; Keller, Ursula ; Südmeyer, Thomas

In: Optica, 2017, vol. 4, no. 12, p. 1482-1487

Optical frequency combs based on ultrafast lasers have enabled numerous scientific breakthroughs. However, their use for commercial applications is limited by the complexity and cost of femtosecond laser technology. Ultrafast semiconductor lasers might change this issue as they can be mass produced in a cost-efficient way while providing large spectral coverage from a single technology. However,...

Université de Neuchâtel

Ultrafast optical parametric oscillator pumped by a vertical external-cavity surface-emitting laser (VECSEL)

Jornod, Nayara ; Wittwer, Valentin J ; Gaponenko, Maxim ; Hoffmann, Martin ; Hempler, Nils ; Malcolm, Graeme P. A ; Maker, Gareth T ; Südmeyer, Thomas

In: Optics Express, 2017, vol. 25, no. 23, p. 28983-28989

We report the first optical parametric oscillator synchronously pumped by a SESAM modelocked vertical external-cavity surface-emitting laser (VECSEL). As a nonlinear medium, we use a periodically poled MgO:PPLN crystal. The VECSEL operates at a wavelength of 982 nm and a repetition rate of 198 MHz. The pump radiation is converted to signal and idler wavelengths tunable in the ranges of 1.4-1.8...

Université de Neuchâtel

High-power amplification of a femtosecond vertical external-cavity surface-emitting laser in an Yb : YAG waveguide

Jornod, Nayara ; Wittwer, Valentin J ; Kränkel, Christian ; Waldburger, Dominik ; Keller, Ursula ; Südmeyer, Thomas ; Calmano, Thomas

In: Optics Express, 2017, vol. 25, no. 14, p. 16527-16533

We present the amplification of a mode-locked vertical external-cavity surfaceemitting laser (VECSEL) using an Yb:YAG crystalline waveguide as gain medium. The VECSEL seed laser operates at a center wavelength of 1030 nm and generates 300-fs pulses at a repetition rate of 1.77 GHz. An average seed power of 60 mW was launched onto a 8.3 mm long fs-laser written Yb:YAG waveguide pumped by 7.7 W...

Université de Neuchâtel

First investigation of the noise and modulation properties of the carrier-envelope offset in a modelocked semiconductor laser

Brochard, Pierre ; Jornod, Nayara ; Schilt, Stéphane ; Wittwer, Valentin J ; Hakobyan, Sargis ; Waldburger, Dominik ; Link, Sandro M ; Alfieri, Cesare G. E ; Golling, Matthias ; Devenoges, Laurent ; Morel, Jacques ; Keller, Ursula ; Südmeyer, Thomas. Laboratoire Temps-Fréquence, Université de Neuchâtel, Switzerland

In: Optics Letters, 2016, vol. 41, no. 14, p. 3165-3168

We present the first characterization of the noise properties and modulation response of the carrier-envelope offset (CEO) frequency in a semiconductor modelocked laser. The CEO beat of an optically-pumped vertical external-cavity surface-emitting laser (VECSEL) at 1030 nm was characterized without standard ƒ-to-2ƒ interferometry. Instead, we used an appropriate combination of...

Université de Neuchâtel

Frequency comb metrology with an optical parametric oscillator

Balskus, K ; Schilt, Stéphane ; Wittwer, Valentin J ; Brochard, Pierre ; Ploetzing, T ; Jornod, Nayara ; McCracken, R. A ; Zhang, Z ; Bartels, A ; Reid, D. T ; Südmeyer, Thomas

In: Optics Express, 2016, vol. 24, no. 8, p. 8370-8381

We report on the first demonstration of absolute frequency comb metrology with an optical parametric oscillator (OPO) frequency comb. The synchronously-pumped OPO operated in the 1.5-μm spectral region and was referenced to an H-maser atomic clock. Using different techniques, we thoroughly characterized the frequency noise power spectral density (PSD) of the repetition rate...