Device for a method of pulsing and amplifying singlemode laser light

• US 6,393,036 B1
• Filed: 01/13/2000
• Issued: 05/21/2002
• Est. Priority Date: 01/14/1999
• Status: Expired due to Fees

• Current Assignee: KOBE University
• Original Assignee: KOBE University
• Inventors: Kato, Hajime
• Primary Examiner(s): Font, Frank G.
• Assistant Examiner(s): Rodriguez, Armando
• Application Number:
  US09/481,941
• Time in Patent Office: 859 Days
• Field of Search: 372/18, 372/10, 372/12, 372/13, 372/14, 372/19, 372/20, 372/22, 372/21, 372/25, 372/29.022, 372/31, 372/97, 372/99
• US Class Current: 372/18
• CPC Class Codes: G02F 1/3542 Multipass arrangements, i.e. arrangements to make light pass multiple times through the same element, e.g. using an enhancement cavity
• CPC Class Codes: G02F 1/37 for second-harmonic generation G02F1/3532 takes precedence
• CPC Class Codes: H01S 3/0057 Temporal shaping, e.g. pulse compression, frequency chirping soliton generation and propagation G02F1/3513, H01S3/063 and H01S3/108

Abstract

A device for and a method of pulsing and amplifying a singlemode laser light for use in a pulse oscillation laser is disclosed. The device comprises a singlemode laser for generating the laser light of the singlemode, an optical resonator into which the outputted laser light is introduced from the singlemode laser, and a controller for controlling the length of resonator by changing the length of the optical resonator based on a control waveform signal, which is an asymmetrical triangular repeated waveform signal. The laser pulse light of the singlemode to which optical strength is amplified from the optical resonator, is outputted by changing the length of resonator.

Claims

1. A device for pulsing and amplifying a singlemode laser light comprising a singlemode laser for generating the laser light of the singlemode, an optical resonator into which the outputted laser light is introduced from the singlemode laser, and a controller for controlling the length of resonator by changing the length of the optical resonator based on a control waveform signal, which is an asymmetrical triangular repeated waveform signal, the laser pulse light of the singlemode to which optical strength is amplified from the optical resonator, is outputted by changing the length of resonator.

4. A device for pulsing and amplifying a singlemode laser light as claimed in claim 1, wherein a double wave generating element is provided in the optical resonator, and the laser pulse light outputted from the optical resonator is made double wave.

2. A device for pulsing and amplifying a singlemode laser light comprising a singlemode laser for generating laser light of singlemode, an optical resonator into which the outputted laser light is introduced from the singlemode laser, an optical path interception means to intercept the optical path. between the singlemode laser and the optical resonator, a resonator length controller by which the resonator length of the optical resonator is changed based on a controlling waveform signal, and a driving means for operating the optical path interception means from the leading time of the laser pulse light output from the optical resonator during the fixed time after a lapse of the given delay time, by changing the length of resonator, the laser pulse light of the singlemode to which optical strength is amplified and the trailing time is shortened, is outputted from the optical resonator.

3. A device for pulsing and amplifying a singlemode laser light as claimed in claim 2, wherein the controlling waveform signal is an asymmetrical triangular repeated waveform signal.

9. A device for pulsing and amplifying a singlemode laser light as claimed in claim 2, wherein a double wave generating element is provided in the optical resonator, and the laser pulse light outputted from the optical resonator is made double wave.

10. A device for pulsing and amplifying a singlemode laser light as claimed in claim 3, wherein a double wave generating element is provided in the optical resonator, and the laser pulse light outputted from the optical resonator is made double wave.

5. A method of pulsing and amplifying a singlemode laser light comprising steps of introducing the laser light emanated from the singlemode laser into the optical resonator, and of changing the resonator length of the optical resonator based on the controlling waveform signal, which is an asymmetrical triangular repeated waveform signal, thereby outputting the singlemode laser pulse light of which optical strength is amplified, from the optical resonator.

8. A method of pulsing and amplifying a singlemode laser light as claimed in claim 5, wherein a double wave generating element is provided with the light resonator, thereby making the laser pulse light outputted from the light resonator wave-doubling.

6. A method of pulsing and amplifying a singlemode laser light comprising steps of:

introducing the laser light emanated from the singlemode laser into the light resonator;

changing the resonator length of the light resonator based on the controlling waveform signal, thereby outputting the laser pulse light from the light resonator; and

intercepting the optical path between the singlemode laser and light resonator after a lapse of given delay time from leading time of the laser pulse light for a certain time, thereby outputting the singlemode laser pulse light of which optical strength is amplified, and trailing time is shortened, from the light resonator.

7. A method of pulsing and amplifying a singlemode laser light as claimed in claim 6, wherein the controlling waveform signal is a asymmetrical triangular repeated waveform signal.

11. A method of pulsing and amplifying a singlemode laser light as claimed in claim 6, wherein a double wave generating element is provided with the light resonator, thereby making the laser pulse light outputted from the light resonator wave-doubling.

12. A method of pulsing and amplifying a singlemode laser light as claimed in claim 7, wherein a double wave generating element is provided with the light resonator, thereby making the laser pulse light outputted from the light resonator wave-doubling.