Related Experiment Video
Updated: Feb 13, 2026
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
15.1K
Coherent frequency division with a degenerate synchronously pumped optical parametric oscillator
Optics Letters
|March 1, 2018
Summary
Synchronously pumped optical parametric oscillators (OPOs) can act as coherent frequency dividers. This study shows a degenerate OPO reduces phase noise by -6 dB compared to the pump frequency comb.
Area of Science:
- Optics and Photonics
- Quantum Optics
- Laser Physics
Background:
- Synchronously pumped optical parametric oscillators (OPOs) are crucial for generating frequency combs (FCs) in the mid-infrared (mid-IR) spectrum.
- Mid-IR spectral range presents challenges due to limited suitable laser gain materials.
- Self-phase-locking of degenerate OPOs to the pump FC has been previously established.
Purpose of the Study:
- To investigate the phase noise characteristics of the carrier envelope offset frequency in degenerate OPOs.
- To evaluate the potential of degenerate OPOs as coherent frequency dividers.
- To quantify the noise reduction capabilities compared to the pump FC.
Main Methods:
- Utilized a synchronously pumped degenerate optical parametric oscillator.
- Conducted a detailed phase noise study of the carrier envelope offset frequency.
- Compared the phase noise of the OPO output to the pump frequency comb across a broad Fourier frequency range.
Main Results:
- Demonstrated a significant -6 dB reduction in phase noise for the OPO's carrier envelope offset frequency relative to the pump FC.
- Observed this noise reduction over a wide range of Fourier frequencies.
- Confirmed the self-phase-locking capability of the degenerate OPO to the pump FC.
Conclusions:
- Degenerate optical parametric oscillators are effective coherent frequency dividers.
- These OPOs offer a method for reducing phase noise in frequency comb generation.
- The demonstrated noise reduction suggests OPOs can be implemented without introducing excess noise, ideal for precision spectroscopy and metrology.
Related Concept Videos
01:30ATP Driven Pumps III: V-type Pumps
4.9K
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
4.9K
01:30Oscillations In An LC Circuit
3.2K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
3.2K
01:06Forced Oscillations
8.0K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
8.0K
01:34ATP Driven Pumps II: P-type Pumps
6.5K
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
6.5K
01:26Long Division of Polynomials
392
Polynomial division is an essential algebraic process to simplify expressions and solve equations. Just as numerical division separates a number into quotient and remainder, polynomial long division partitions a polynomial into simpler components; in this context, the dividend is the polynomial being divided, the divisor is the expression dividing it, and the result is expressed in terms of a quotient and a remainder.The division begins by arranging the dividend and divisor in standard...
392
01:07Damped Oscillations
7.4K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
7.4K