Unlock instant, AI-driven research and patent intelligence for your innovation.

Mixed injection type FS laser optical parameter amplifier device

An optical parametric, femtosecond laser technology, applied in the laser field, can solve the problems of restricting the application of femtosecond OPA devices and reducing the spectral quality of femtosecond signal lasers, and achieve the effect of ensuring spectral purity and good pulse width.

Inactive Publication Date: 2009-12-09
FUDAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ensuing problem is that the narrow-band injection light is mixed in the femtosecond signal light output by the device. Since they have the same wavelength, it is difficult to separate the narrow-band light, so that the wide spectrum of the femtosecond laser pulse contains high-amplitude narrow-band spectral components. , thereby reducing the spectral quality of the femtosecond signal laser and limiting the application of femtosecond OPA devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixed injection type FS laser optical parameter amplifier device
  • Mixed injection type FS laser optical parameter amplifier device
  • Mixed injection type FS laser optical parameter amplifier device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Further describe the present invention below in conjunction with accompanying drawing.

[0017] figure 1 Shown is a hybrid injection OPA device according to the present invention. The device comprises two stages of OPA which comprise nonlinear crystals 3 and 4 respectively. The femtosecond laser 14 (15) emitted by the pump laser source 1 passes through the crystals 3 and 4 in sequence, as the pump light of the two-stage OPA; the narrow-band laser 16 emitted by the synchronous narrow-band laser source 2 with a wavelength similar to the OPA signal light is used as the first Injection light for primary OPA. The dichroic mirror 10 couples the femtosecond pump light 14 (15) and the continuous signal light 16, collinearly enters the nonlinear crystal 3, and performs the first-stage OPA process in a type-I matching manner, thereby generating the first-stage amplified femtosecond Signal light 20 and femtosecond idler light 17 . The dichroic mirror 13 separates the femtoseco...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of laser technology, in particular to a hybrid injection femtosecond pulse optical parametric amplifier (OPA) device, comprising two-stage collinear OPA, a femtosecond pumping laser source, a synchronous narrow-band signal light source, at least two two-color mirror, a filter and two retarders. The two-stage OPA respectively uses injection light of different wavelengths, the first stage uses narrow-band signal light as injection, and the second stage uses newly amplified "clean" femtosecond idle light pulses as injection. The femtosecond OPA device has high efficiency, stability, excellent output laser spectrum quality and compact structure; it can be used as an ideal tunable femtosecond laser source.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a femtosecond laser optical parameter amplifier (OPA) device. Background technique [0002] Femtosecond pulsed laser provides an important scientific research method, which is applied to the study of ultrafast processes and the interaction between intense light and matter. The OPA process is an important means of laser energy amplification and wavelength tuning. The femtosecond OPA device has become an efficient and stable tunable femtosecond pulsed laser source. [0003] The OPA process occurs in a suitable nonlinear crystal, and there are three different frequencies (or wavelengths) of laser light involved, which are called pump light, signal light and idle light. In the OPA process, the high-intensity, high-frequency pump light amplifies the low-intensity, low-frequency signal light, and at the same time generates and amplifies idle light. [0004] In order to improve effici...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/39G02F1/35
Inventor 钱列加罗航袁鹏朱鹤元
Owner FUDAN UNIV