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- Stimulated Raman spectroscopy, also referred to as stimulated Raman scattering (SRS) is a form of spectroscopy employed in physics, chemistry, biology, and other fields. The basic mechanism resembles that of spontaneous Raman spectroscopy: a pump photon, of the angular frequency , which is scattered by a molecule has some small probability of inducing some vibrational (or rotational) transition, as opposed to inducing a simple Rayleigh transition. This makes the molecule emit a photon at a shifted frequency. However, SRS, as opposed to spontaneous Raman spectroscopy, is a third-order non-linear phenomenon involving a second photon—the Stokes photon of angular frequency —which stimulates a specific transition. When the difference in frequency between both photons resembles that of a specific vibrational (or rotational) transition the occurrence of this transition is resonantly enhanced. In SRS, the signal is equivalent to changes in the intensity of the pump and Stokes beams. The signals are typically rather low, of the order of a part in 10^5, thus calling for modulation-transfer techniques: one beam is modulated in amplitude and the signal is detected on the other beam via a lock-in amplifier. Employing a pump laser beam of a constant frequency and a Stokes laser beam of a scanned frequency (or vice versa) allows for the unraveling of the spectral fingerprint of the molecule. This spectral fingerprint differs from those obtained by other spectroscopy methods such as Rayleigh scattering as the Raman transitions confer to different exclusion rules than those that apply for Rayleigh transitions. (en)
- 受激拉曼光谱技术，也称为受激拉曼散射 (SRS)是一種用在物理、化学、生物和其他领域的 光谱學技術。 其產生機制相似於自發拉曼光谱：一角频率為 的激發光子，當分子吸收後，有一定機率可以誘發振动(或转動)躍遷（不同於诱发一个简单的瑞利躍遷）。 这将导致分子发射的一个帶有偏移频率的光子。 然而，SRS，不同於自发拉曼光谱學，是一个三阶非线性的现象，需要第二光子—斯托克斯光子（角频率 ）—來激發產生特定頻率的躍遷。当兩個光子之间的频率差等於的一特定的振动(或转動)躍遷，发生这种躍遷的次數將共振式地增加。 在SRS，激發和斯托克斯光强度的变化可視為訊號。選用一恒定频率的雷射為激發光和扫描式频率的雷射為斯托克光(或相反)，可以得到分子的光谱特徵。 这个光谱特徵不同于其他光谱方法所得到的：例如瑞利散射。因為拉曼躍遷適用的排除规则不同於那些适用于瑞利躍遷的。 (zh)
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- 受激拉曼光谱技术，也称为受激拉曼散射 (SRS)是一種用在物理、化学、生物和其他领域的 光谱學技術。 其產生機制相似於自發拉曼光谱：一角频率為 的激發光子，當分子吸收後，有一定機率可以誘發振动(或转動)躍遷（不同於诱发一个简单的瑞利躍遷）。 这将导致分子发射的一个帶有偏移频率的光子。 然而，SRS，不同於自发拉曼光谱學，是一个三阶非线性的现象，需要第二光子—斯托克斯光子（角频率 ）—來激發產生特定頻率的躍遷。当兩個光子之间的频率差等於的一特定的振动(或转動)躍遷，发生这种躍遷的次數將共振式地增加。 在SRS，激發和斯托克斯光强度的变化可視為訊號。選用一恒定频率的雷射為激發光和扫描式频率的雷射為斯托克光(或相反)，可以得到分子的光谱特徵。 这个光谱特徵不同于其他光谱方法所得到的：例如瑞利散射。因為拉曼躍遷適用的排除规则不同於那些适用于瑞利躍遷的。 (zh)
- Stimulated Raman spectroscopy, also referred to as stimulated Raman scattering (SRS) is a form of spectroscopy employed in physics, chemistry, biology, and other fields. The basic mechanism resembles that of spontaneous Raman spectroscopy: a pump photon, of the angular frequency , which is scattered by a molecule has some small probability of inducing some vibrational (or rotational) transition, as opposed to inducing a simple Rayleigh transition. This makes the molecule emit a photon at a shifted frequency. However, SRS, as opposed to spontaneous Raman spectroscopy, is a third-order non-linear phenomenon involving a second photon—the Stokes photon of angular frequency —which stimulates a specific transition. When the difference in frequency between both photons resembles that of a spec (en)
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- Stimulated Raman spectroscopy (en)
- 受激拉曼光谱技术 (zh)
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