Compact high-performance tandem optical parametric oscillator for the 8-12μm band

Yosi Ehrlich; Shlomo Fastig; Shaul Pearl; Gidon Cinader

doi:10.1117/12.452787

Compact high-performance tandem optical parametric oscillator for the 8-12μm band

Yosi Ehrlich, Shlomo Fastig, Shaul Pearl, Gidon Cinader

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A compact IR transmitter for the 8-12μm atmospheric window is presented. The transmitter consists of two optical parametric oscillators (OPOs) in series, pumped by a 1.064μm Nd:YAG laser. The first conversion stage is a double-pass non-critically phase-matched KTP OPO. A singly resonant configuration is used - the signal at 1.574μm is resonated and coupled out with a 73% reflectivity output mirror. The first OPO's signal serves as a pump for a double-pass type I phase-matched AgGaSe₂ OPO. This second OPO resonates the signal (∼ 1.9μm) and couples out the idler at 8-11μm. We eliminate high oscillating intensities inside the cavity by means of a low feedback (only ∼ 50% signal reflectivity at the input mirror). The low feedback causes a high threshold level, but have a minor influence on the total efficiency. Pumped by 6.5mJ at 1.574μm, the AgGaSe₂ OPO produced up to 0.5mJ at 8.5μm, with beam quality of M²=4-5 and spectral width of 4-5cm^-1. Small physical dimensions, simplicity, and fairly good stability, makes this tandem OPO system usable for remote sensing applications. The described system is currently used for laboratory aerosol backscatter measurements.

Original language	English
Pages (from-to)	311-317
Number of pages	7
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4484
DOIs	https://doi.org/10.1117/12.452787
State	Published - 1 Jan 2002
Externally published	Yes

Keywords

AgGaSe
Optical frequency conversion
Remote sensing
Tandem OPO
Tunable mid IR source

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.452787

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@article{b160820a1a2341639ec2c44901677a40,

title = "Compact high-performance tandem optical parametric oscillator for the 8-12μm band",

abstract = "A compact IR transmitter for the 8-12μm atmospheric window is presented. The transmitter consists of two optical parametric oscillators (OPOs) in series, pumped by a 1.064μm Nd:YAG laser. The first conversion stage is a double-pass non-critically phase-matched KTP OPO. A singly resonant configuration is used - the signal at 1.574μm is resonated and coupled out with a 73\% reflectivity output mirror. The first OPO's signal serves as a pump for a double-pass type I phase-matched AgGaSe2 OPO. This second OPO resonates the signal (∼ 1.9μm) and couples out the idler at 8-11μm. We eliminate high oscillating intensities inside the cavity by means of a low feedback (only ∼ 50\% signal reflectivity at the input mirror). The low feedback causes a high threshold level, but have a minor influence on the total efficiency. Pumped by 6.5mJ at 1.574μm, the AgGaSe2 OPO produced up to 0.5mJ at 8.5μm, with beam quality of M2=4-5 and spectral width of 4-5cm-1. Small physical dimensions, simplicity, and fairly good stability, makes this tandem OPO system usable for remote sensing applications. The described system is currently used for laboratory aerosol backscatter measurements.",

keywords = "AgGaSe, Optical frequency conversion, Remote sensing, Tandem OPO, Tunable mid IR source",

author = "Yosi Ehrlich and Shlomo Fastig and Shaul Pearl and Gidon Cinader",

year = "2002",

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doi = "10.1117/12.452787",

language = "English",

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TY - JOUR

T1 - Compact high-performance tandem optical parametric oscillator for the 8-12μm band

AU - Ehrlich, Yosi

AU - Fastig, Shlomo

AU - Pearl, Shaul

AU - Cinader, Gidon

PY - 2002/1/1

Y1 - 2002/1/1

N2 - A compact IR transmitter for the 8-12μm atmospheric window is presented. The transmitter consists of two optical parametric oscillators (OPOs) in series, pumped by a 1.064μm Nd:YAG laser. The first conversion stage is a double-pass non-critically phase-matched KTP OPO. A singly resonant configuration is used - the signal at 1.574μm is resonated and coupled out with a 73% reflectivity output mirror. The first OPO's signal serves as a pump for a double-pass type I phase-matched AgGaSe2 OPO. This second OPO resonates the signal (∼ 1.9μm) and couples out the idler at 8-11μm. We eliminate high oscillating intensities inside the cavity by means of a low feedback (only ∼ 50% signal reflectivity at the input mirror). The low feedback causes a high threshold level, but have a minor influence on the total efficiency. Pumped by 6.5mJ at 1.574μm, the AgGaSe2 OPO produced up to 0.5mJ at 8.5μm, with beam quality of M2=4-5 and spectral width of 4-5cm-1. Small physical dimensions, simplicity, and fairly good stability, makes this tandem OPO system usable for remote sensing applications. The described system is currently used for laboratory aerosol backscatter measurements.

AB - A compact IR transmitter for the 8-12μm atmospheric window is presented. The transmitter consists of two optical parametric oscillators (OPOs) in series, pumped by a 1.064μm Nd:YAG laser. The first conversion stage is a double-pass non-critically phase-matched KTP OPO. A singly resonant configuration is used - the signal at 1.574μm is resonated and coupled out with a 73% reflectivity output mirror. The first OPO's signal serves as a pump for a double-pass type I phase-matched AgGaSe2 OPO. This second OPO resonates the signal (∼ 1.9μm) and couples out the idler at 8-11μm. We eliminate high oscillating intensities inside the cavity by means of a low feedback (only ∼ 50% signal reflectivity at the input mirror). The low feedback causes a high threshold level, but have a minor influence on the total efficiency. Pumped by 6.5mJ at 1.574μm, the AgGaSe2 OPO produced up to 0.5mJ at 8.5μm, with beam quality of M2=4-5 and spectral width of 4-5cm-1. Small physical dimensions, simplicity, and fairly good stability, makes this tandem OPO system usable for remote sensing applications. The described system is currently used for laboratory aerosol backscatter measurements.

KW - AgGaSe

KW - Optical frequency conversion

KW - Remote sensing

KW - Tandem OPO

KW - Tunable mid IR source

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DO - 10.1117/12.452787

M3 - Article

AN - SCOPUS:0036394871

SN - 0277-786X

VL - 4484

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

ER -

Compact high-performance tandem optical parametric oscillator for the 8-12μm band

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