Midinfrared frequency combs from coherent supercontinuum in chalcogenide and optical parametric oscillation.
نویسندگان
چکیده
We observe the coherence of the supercontinuum generated in a nanospike chalcogenide-silica hybrid waveguide pumped at 2 μm. The supercontinuum is shown to be coherent with the pump by interfering it with a doubly resonant optical parametric oscillator (OPO) that is itself coherent with the shared pump laser. This enables coherent locking of the OPO to the optically referenced pump frequency comb, resulting in a composite frequency comb with wavelengths from 1 to 6 μm.
منابع مشابه
Supercontinuum Generation in a Highly Nonlinear Chalcogenide/ MgF2 Hybrid Photonic Crystal Fiber
In this paper, we report the numerical analysis of a photonic crystal fiber (PCF) for generating an efficient supercontinuum medium. For our computational studies, the core of the proposed structure is made up of As2Se3 and the cladding structure consists of an inner ring of holes made up As2Se3 and four outer rings of air holes in MgF2. The proposed structure provides excellent nonlinear coeff...
متن کاملAFRL-AFOSR-VA-TR-2015-0365 Silicon-Chip-Based Optical Frequency Combs
We have theoretically and experimentally investigated the dynamics of frequency comb generation insilicon-based microresonators. In this system, the parametric gain associated with the nonlinear process offour-wave mixing leads to parametric oscillation and generation of signal/idler sidemodes.This report describes our results that further develop the parametric comb technology. We ...
متن کاملAsynchronous midinfrared ultrafast optical parametric oscillator for dual-comb spectroscopy.
Two asynchronous, broadband 3.3 µm pulse trains with a stabilized repetition-rate difference of up to 5 kHz were generated using an ultrafast optical parametric oscillator. The two oscillation channels, each producing ~100 mW average power, ran essentially independently, and weak non-phase-matched sum-frequency mixing between them provided a timing signal that indicated when the asynchronous pu...
متن کاملLow-threshold parametric oscillation in organically modified microcavities
Coherent frequency generators are an enabling platform in basic science and applied technology. Originally reliant on high-power lasers, recently comb generation has been demonstrated in ultrahigh-Q microcavities. The large circulating intensity within the cavity results in strong light-matter interaction, giving rise to Kerr parametric oscillations for comb generation. However, the comb genera...
متن کاملComparative analysis of spectral coherence in microresonator frequency combs.
Microresonator combs exploit parametric oscillation and nonlinear mixing in an ultrahigh-Q cavity. This new comb generator offers unique potential for chip integration and access to high repetition rates. However, time-domain studies reveal an intricate spectral coherence behavior in this type of platform. In particular, coherent, partially coherent or incoherent combs have been observed using ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Optics letters
دوره 39 7 شماره
صفحات -
تاریخ انتشار 2014