External Cavity Mode-locked Semiconductor Lasers For The Generation Of Ultra-low Noise Multi-gigahertz Frequency Combs And Applications In Multi-heterodyne Detection Of Arbitrary Optical Waveforms

The construction and characterization of ultra-low noise semiconductor-based mode-locked lasers as frequency comb sources with multi-gigahertz combline-to-combline spacing is studied in this dissertation. Several different systems were built and characterized. The first of these systems includes a novel mode-locking mechanism based on phase modulation and periodic spectral filtering. This mode-locked laser design uses the same intra-cavity elements for both mode-locking and frequency stabilization to an intra-cavity, 1,000 Finesse, Fabry-Pérot Etalon (FPE). On a separate effort, a mode-locked laser based on a Slab-Coupled Optical Waveguide Amplifier (SCOWA) was built. This system generates a pulse-train with residual timing jitter o

Optical Modulator with Linear Response

A purely linear resonant cavity interferometric modulator with a potential infinite spurious free dynamic range and multi-gigahertz bandwidth is described

Multiheterodyne Detection and Sampling of Periodically Filtered White Light for Correlations at 20 km of Delay

A frequency comb is used as a set of coherent local oscillators to downconvert and spectrally compress white light that has been periodically filtered by a Fabry-Perot etalon. Multiheterodyne detection allows white light spread across 100 GHz of optical spectrum to be compressed to 5 GHz of radio frequency (RF) bandwidth for electronic sampling on an oscilloscope. Correlations are observed at delays of up to 20 km with a minimum resolution of less than 1 mm. Calculations show that resolution may be easily increased by increasing etalon finesse and frequency comb bandwidth

Compact, Portable, Thermal-Noise-Limited Optical Cavity with Low Acceleration Sensitivity

We develop and demonstrate a compact (less than $6$ mL) portable Fabry-P\'{e}rot optical reference cavity. A laser locked to the cavity is thermal noise limited at $2\times10^{-14}$ fractional frequency stability. Broadband feedback control with an electro-optic modulator enables near thermal-noise-limited phase noise performance from $1$ Hz to $10$ kHz offset frequencies. The additional low vibration, temperature, and holding force sensitivity of our design makes it well suited for out-of-the-lab applications such as optically derived low noise microwave generation, compact and mobile optical atomic clocks, and environmental sensing through deployed fiber networks.Comment: 12 pages, 6 figure

HISTORIA DE MÉXICO

GUÍA DIDÁCTICA / PLANEACIÓN DIDÁCTICA (NMS

Absolute Frequency Stability Measurements Of A Semiconductor-Based, Etalon-Stabilized 10 Ghz Optical Frequency Comb

We present a semiconductor optical frequency comb stabilized to an intracavity, 104 Finesse etalon which is held in a vacuum chamber and temperature stabilized. The frequency instability is \u3c90 kHz in \u3e12 min of operation. © OSA 2013

Absolute Frequency Stability Measurements Of A Semiconductor-Based, Etalon-Stabilized 10 Ghz Optical Frequency Comb

We present a semiconductor optical frequency comb stabilized to an intracavity, 104 Finesse etalon which is held in a vacuum chamber and temperature stabilized. The frequency instability is \u3c90 kHz in \u3e12 min of operation. © 2013 The Optical Society

Frequency Stability Of A 10 Ghz Optical Frequency Comb From A Semiconductor-Based Mode-Locked Laser With An Intracavity 10,000 Finesse Etalon

An optical frequency comb is constructed using a semiconductor gain medium with a fiber-coupled external cavity and stabilized to an intracavity 10,000 finesse etalon, which is temperature stabilized and held in a vacuum chamber at 10-6 Torr. Optical frequency stability measurements show that the comb has a reduced sensitivity to environmental fluctuations. An upper limit on the optical frequency variation of 100 kHz over \u3e12 min of continuous operation is measured using a real-time spectrum analyzer. This measurement is limited by the linewidth of the reference source, and further measurements with a frequency counter show a fractional deviation of 2 × 10-11 at 50 ms. Furthermore, out-of-band ASE rejection is shown to be \u3e36 dB, a tenfold improvement over that of a laser with a 1000 finesse FPE. © 2013 Optical Society of America

Frequency Stability Of A 10Ghz Optical Frequency Comb From A Semiconductor Based Mode-Locked Laser With An Intra-Cavity 10,000 Finesse Etalon

An optical frequency comb from a semiconductor-based mode-locked laser with temperature-stabilized intra-cavity etalon held in a vacuum chamber is demonstrated to have \u3c100 kHz variation over \u3e12 minutes, and fractional deviation of 2×10-11 at 50 ms. © OSA 2013