Study of thermal lens effect induced by Ar ion laser in ethanol and determination of thermal lens focal length

2013 ◽  
Author(s):  
Mohammad H. Mahdieh ◽  
S. Ahmad Ashrafi ◽  
Hamed Moradi
Keyword(s):  
Thermal Lens ◽  
Focal Length ◽  
Lens Effect ◽  
Ion Laser ◽  
Lens Focal Length ◽  
Thermal Lens Effect

Determination of formaldehyde with the thermal lens effect

1985 ◽  
Vol 57 (4) ◽  
pp. 861-864 ◽  
Author(s):  
Jan A. Alfheim ◽  
Cooper H. Langford
Keyword(s):  
Thermal Lens ◽  
Lens Effect ◽  
Thermal Lens Effect

More precise determination of thermal lens focal length for end-pumped solid-state lasers

2006 ◽  
Vol 266 (2) ◽  
pp. 620-626 ◽  
Author(s):  
Shuzhen Fan ◽  
Xingyu Zhang ◽  
Qingpu Wang ◽  
Shutao Li ◽  
Shuanghong Ding ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Lens ◽  
Focal Length ◽  
Precise Determination ◽  
Solid State Lasers ◽  
Lens Focal Length

Ultratrace Determination of Metals with Dithizone by Thermal Lens Spectrophotometry

1988 ◽  
Vol 42 (2) ◽  
pp. 341-346 ◽  
Author(s):  
G. Ramis Ramos ◽  
M. C. Garcia Alvarez-Coque ◽  
B. W. Smith ◽  
N. Omenetto ◽  
J. D. Winefordner
Keyword(s):  
Carbon Tetrachloride ◽  
Thermal Lens ◽  
Dynamic Range ◽  
Pump Probe ◽  
Pump And Probe ◽  
Relative Standard ◽  
Ion Laser ◽  
Lock In ◽  
Thermal Lens Effect

A pump-probe thermal lens instrument was constructed, evaluated, and applied to the determination of metals after extraction with dithizone in carbon tetrachloride. An argon-ion laser operated at 514.5 nm, with a power of just 22 mW at the cuvette position and chopped at 2 Hz, and a He-Ne laser were used as a pump and probe, respectively. The thermal lens effect was measured by a pinhole-photodiode and a lock-in amplifier. Evaluation of the setup with an iodine solution in carbon tetrachloride gave a minimum detectable absorbance of 5 × 10−6 (S/N = 3), the upper limit of the dynamic range being 5.7 × 10−3. Relative standard deviation was about 3%. Calibration curves and limits of detection for several metal dithizonates were obtained. From extractions of cadmium dithizonate at concentrations lower than 2 ng mL−1, a LOD of 8 pg mL−1, corresponding to an absolute LOD of 4 fg of cadmium in the probe volume, was achieved.

Stabilization of the output power of a cw laser by the thermal lens effect

1990 ◽  
Vol 20 (1) ◽  
pp. 52-53
Author(s):  
A I Larkin ◽  
Yu A Mironov ◽  
V M Petropavlovskiĭ
Keyword(s):  
Output Power ◽  
Thermal Lens ◽  
Lens Effect ◽  
Cw Laser ◽  
Thermal Lens Effect

The interferometric measurement of thermal lens effect in a LD pumped Tm-doped bulk laser

2021 ◽  
Author(s):  
Yuantao Zhao ◽  
Shengzhi Zhao ◽  
Tao Li ◽  
Yizhou Liu ◽  
Chun Wang ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Thermal Lens ◽  
Precise Measurement ◽  
Laser Crystal ◽  
Focal Length ◽  
Mode Locking ◽  
Experimental Result ◽  
Interferometric Method ◽  
Thermal Lens Effect ◽  
Thermal Focal Length

Abstract Directly measuring thermal focal length is important for designing and optimizing the mode locking oscillator, especially for a 2-μm mode-locking laser. In this paper, we propose a novel interferometric method for measuring the thermal focal length in a 2-μm mode-locking laser. This method could give a precise measurement of the thermal focal length inside a long-folded oscillator in both lasing and non-lasing operation. We also theoretically calculate the thermal focal length based on the temperature distribution inside the laser crystal, which matches well with the experimental result

Impact of Radial and Tangential Thermal Lens Effect on Output Characteristics of High-Brightness Lasers

2010 ◽  
Vol 37 (11) ◽  
pp. 2780-2783
Author(s):  
丁欣 Ding Xin ◽  
李雪 Li Xue ◽  
盛泉 Sheng Quan ◽  
李斌 Li Bin ◽  
周睿 Zhou Rui ◽  
...  
Keyword(s):  
Thermal Lens ◽  
High Brightness ◽  
Lens Effect ◽  
Output Characteristics ◽  
Thermal Lens Effect
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