Design and construction of a 110W green laser for medical application

Fabrication of Photothermo-Responsive Drug-Loaded Nanogel for Synergetic Cancer Therapy

“…However, visible light provides some advantages in certain medical procedures [13]. For example, green light has been applied in the clinical treatment of prostate benign prostate hyperplasia [14]. Although the penetration depth of green light into a tissue is less than NIR [15], the absorption coefficient of green light to water is much lower, nearly 10-fold, than that of NIR [16].…”

Double-crystal RbTiOPO4for simultaneous 200 kHzQ-switching and second-harmonic generation in a direct-pumped Nd:YVO4laser

“…High repetition rate short pulsed compact solid state green laser sources are promising for many applications such as laser color display, medical applications, optical data storage and underwater communications. The use of active Q-switching together with the intracavity frequency doubling technique has been one of the most popular means of attaining such light sources [1][2][3][4][5][6][7][8]. Active Q-switching mainly consists of two commonly used Q-switch modes, an acousto-optic (AO) Q-switch [9][10][11][12][13][14][15] and an electro-optic (EO) Q-switch [16][17][18][19][20].…”

Compact high conversion efficiency Nd:YAG/LBO green laser using unstable V cavity

“…In recent years, laser diode (LD) pumped solid state green lasers have attracted a great deal of atten tion because of their high efficiency, high beam qual ity, compactness and wide applications such as display, optical data storage, industry material processing, sensing, entertainment, coherent telecommunica tions, medical treatment, ocean exploration, undersea communications and pump source for Ti:sapphire laser system [1][2][3][4][5]. Intra cavity frequency doubling of LD pumped Nd 3+ and Yb 3+ doped solid state lasers has been found to be an efficient method to achieve the visible lasers [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], UV lasers [21], and infrared lasers [22][23][24][25][26], especially, the LD pumped Nd:YAG lasers due to the good optical, thermal, and mechani cal performances.…”

“…In practices, many parameters are very important to customers, such as the optical to optical conversion efficiency and the cavity compact ness. To our knowledge, Q. Liu using MOPA (master oscillator power amplifier system as pump source and extra cavity SHG (second harmonic generation) methods to obtain the highest diode to green conver sion efficiency of 24%, it's SHG conversion efficiency is 67% [31]; Konno employs a diffusive close coupled diode pumping and a bi focusing compensation reso nator design to obtain more than 90% SHG conver sion efficiency and 17.3% optical to optical conversion efficiency [9]; the shortest cavity length is 485 mm and designed by Hajiesmaeilbaigi, with SHG conversion efficiency about 59% [2]. The popularly used nonlin ear crystal used in SHG green laser are LBO [32] and KTP [33], KTP has higher effective nonlinearity and larger accepted width, but with poor thermal charac teristics and high risk of gray track for long term using even if the GTR (gray track resistance) KTP [34] was adopt.…”