関連する実験動画
Updated: Jun 3, 2026
10:52
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
9.8K
アップコンバーションポンプは,従来のポンプと同じようなメディアでコレージングを開始できますか?
Optics letters
|August 29, 2025
まとめ
この研究では,トリウム (Tm3+) レーザーの従来のポンプとアップコンバージョンのポンプを比較し,2μmと2.3μmでコレージングが達成可能であることが判明しました. 臨界イオン濃度は,どの波長が最初にレーズするかを決定します.
科学分野:
- レーザー物理学
- 材料科学
- 量子電子
背景:
- チューリウムドーピングレーザー (Tm3+) は,中赤外線を生成するために不可欠です.
- Tm3+レーザーのコレージングは,調節可能な出力を提供しますが,複雑なエネルギー転送メカニズムを理解する必要があります.
- 従来のポンプシステムとアップコンバージョンのポンプシステムは,レーザー作用を達成するための異なる経路を示しています.
研究 の 目的:
- 理論的にTm3+レーザーにおける従来のポンプとアップコンバージョンの値と効率を比較する.
- 2μmと2.3μm近くのコレーシング現象を調査する.
- Tm3+イオン濃度に基づいて特定の波長でレージングの発生を予測するモデルを開発する.
主な方法:
- レーザーダイナミクスをモデル化するためにレート方程式式が採用されました.
- クープリングされたパワーゲイン方程式は,クロスリラクゼーション (CR) とエネルギー転送アップコンバージョン (ETU) を含む.
- レーシングの値とコレーシングの効率に関する分析的な解決策が得られた.
主要な成果:
- 共同レージングは,従来のポンプ方式でTm3+:YLFレーザーの実験データに対して達成され,検証された.
- 2μmと2.3μmの両方の波長での出力力は,コレージングレジムのポンプ電力に線形依存を示した.
- 2つの波長間のレージングの配列を決定するために分析条件を導出しました.
結論:
- 従来のポンプとアップコンバージョンのポンプは,Tm3+レーザーでコレージングを効果的に達成できます.
- このモデルは実験的観測を正確に予測し,CRとETUの重要性を強調しています.
- Tm3+イオン濃度が決定され,最初のレージング波長 (2.3μmまたは2μm) が決定された.
関連する概念動画
01:34ATP Driven Pumps II: P-type Pumps
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...
01:30ATP Driven Pumps III: V-type Pumps
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...
01:03Application of Pascal's Law
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system by applying...
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system by applying...
01:17Bernoulli's Principle: Applications
There are many devices and situations in which fluid flows at a constant height and so can be analyzed using Bernoulli's principle. These devices include, but are not limited to, entrainment devices and fluid flow measuring devices.
Entrainment devices use a high fluid speed to create low pressures and, thus, entrain one fluid into another. Some examples of these devices are given below:
Entrainment devices use a high fluid speed to create low pressures and, thus, entrain one fluid into another. Some examples of these devices are given below:
01:13Pumped Concrete
Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
01:18Bioreactor Controls-II
In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...