Jones matrix formulation of a Porro prism laser resonator with waveplates: theoretical and experimental analysis

Agrawal, Lalita; Bhardwaj, A.; Pal, Swades; Kumar, Avinash

doi:10.1007/s00340-007-2801-9

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…In the cavity, a λ/4 wave plate (QWP1) is used to compensate the phase shift induced by Porro prism 1. The combination of QWP1 and Porro prism 1 acts as a totally reflecting mirror without any polarization change when the beam makes a round trip [14]; on the other hand, the combination of the 0.57λ wave plate (0.57 WP) and Porro prism 2 plays the role of combining the λ/4 wave plate and totally reflecting the mirror when the beam passes through them and comes back successively. A Pockells cell driven by λ/4 voltage is inserted between the polarizer and the 0.57λ wave plate to form a Q-switcher together with Porro prism 2.…”

Section: Methodsmentioning

confidence: 99%

Temperature insensitive high energyQ-switched Nd:YAG slab laser

Xie

Zhu

et al. 2017

Laser Phys. Lett.

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A temperature insensitive high energy Nd:YAG Q-switched laser operating over a temperature variation range of 35 °C is presented. Multi-wavelength (λ) laser diode (LD) stacks and a hexagon Nd:YAG slab with an effective absorption length of 46 mm are adopted to diminish the output energy fluctuation due to the temperature changing. A couple of crossed Porro prisms are used to form a folded laser cavity with polarization coupled output, and actively Q-switched operation is realized by using a KD*P Pockels cell. Output pulse energy of about 128 mJ is obtained over the temperature range of 10–45 °C, corresponding to an optical-to-optical efficiency of 14% and a slope efficiency of 21%. The pulse duration and beam divergence are around 17 ns and 2.8 mrad respectively.

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Section: Methodsmentioning

confidence: 99%

Temperature insensitive high energyQ-switched Nd:YAG slab laser

Xie

Zhu

et al. 2017

Laser Phys. Lett.

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“…The Q-switched laser (1064 nm) output parameters were analyzed numerically by solving the coupled rate equations of photon (φ) and population inversion density (n l ) [8][9] .…”

Section: Resonator Without Opomentioning

confidence: 99%

Design and Development of Intracavity Optical Parametric Oscillator-based Eye Safe Laser Operating at 20 Hz without Forced Air Cooling

Bhardwaj

Agrawal

Maini

2013

DSJ

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“…The mode structures in prism resonators are complicated and hence the focusing properties (far-field) are different compared to conventional spherical resonators, which can be used gainfully for desired beam shaping. 17,[23][24][25][26] Though the CVL was capable of operating at 70 W (plane-plane cavity), it was set to operate at ∼50 W during prism resonator experiments to reduce ASE content and for comparison with other resonators demonstrated by us in past. 13,14,18,19 The CVL was successfully operated with prism resonator configurations as shown in Figs.…”

Section: B Ke-cvl Performance With Prism Resonatormentioning

confidence: 99%

“…The modes of prism resonator are complex in nature [25][26][27] and difficult to resolve experimentally in near-field. This is also due to some unavoidable ASE content in the cavity because of the high gain nature of the CVL.…”

Section: B Ke-cvl Performance With Prism Resonatormentioning

confidence: 99%

Efficient copper vapor laser using metal (Cu, Ag) chlorides in thermal insulation and performance with new prism resonator configurations

Singh

2012

Review of Scientific Instruments

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A copper vapor laser based on the use of copper chloride and silver chloride mixture embedded inside the laser head thermal insulation is successfully demonstrated. The use of external HCl generator cell containing zirconium chloride normally used for its kinetically enhanced mode of operation is completely eliminated. With this new configuration laser power of ~70 W was achieved from a wide aperture ~47-50 mm bore discharge tube with input power of ~5 kW and overall high efficiency of ~1.4% without external supply of HCl vapors to the laser head. In a typical operational cycle the laser initially operates as low temperature CuCl laser with startup time of few minutes and output power of ~10 W during low tube temperature range of ~300-500 °C. Thereafter, the laser transforms itself into efficient kinetically enhanced copper vapor laser (CVL) at high temperature range of ~1200-1600 °C with maximum laser output power of ~70 W. This dual mode of operation observed in a single CVL system is unique and has not been reported so far in any high temperature copper vapor laser. New resonator configurations, namely, the prism resonator in stable and unstable form are successfully demonstrated for the first time in a copper vapor laser to achieve low divergence beam with dramatic increase in misalignment tolerance to ~25 mrad, which is an improvement of about ~50 times compared to standard CVLs with conventional spherical or plane-plane resonators. With these new resonator configurations the CVL functions almost as an "alignment free laser" system with significantly reduced beam divergence of ~0.2 mrad and high optical extraction efficiency of ~70%-80%.

show abstract

Jones matrix formulation of a Porro prism laser resonator with waveplates: theoretical and experimental analysis

Cited by 7 publications

References 12 publications

Temperature insensitive high energyQ-switched Nd:YAG slab laser

Temperature insensitive high energyQ-switched Nd:YAG slab laser

Design and Development of Intracavity Optical Parametric Oscillator-based Eye Safe Laser Operating at 20 Hz without Forced Air Cooling

Efficient copper vapor laser using metal (Cu, Ag) chlorides in thermal insulation and performance with new prism resonator configurations

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